Showing posts with label Kidney Stones. Show all posts
Showing posts with label Kidney Stones. Show all posts

Sunday, April 15, 2012

Complications of Lithotripsy.

Kidney Stone
Kidney Stone (Photo credit: peterjr1961)
Extra corporeal shock wave lithotripsy is an accepted well tried and proven method of treating specific types of kidney stones. It has been used consistently since the 1980's for the treatment of kidney stones. It is widely recognized as the leading noninvasive method of treating acute and chronic kidney stones. although side effects are generally mild and well tolerated it should be borne in mind that the best way of avoiding complications is by being aware of the contraindications for the procedure to begin with; these include..
3 mm stone in the ureter
3 mm stone in the ureter (Photo credit: Wikipedia)


  1. Pregnancy
  2. Uncontrolled Infections of the urinary tract
  3. Uncontrolled alteration of coagulation
  4. Aortic or renal artery aneurysm
  5. Serious skeletal malformations
  6. Serious obesity. 
Complications arise from. 
  • Formation and passage of fragments. 
  • Infections
  • Effects on kidney function
  • Hypertension. 
FORMATION AND PASSAGE OF FRAGMENTS. 

If the stone is large but by its nature non obstructing of renal urine flow, then incomplete lithotripsy may break the fragment into pieces which are smaller but not small enough  to pass down the ureter. Thus giving rise to obstruction of the ureter and pain. There are technical factors which may result in incomplete fragmentation, other factors include location of the stone, volume and number of stones (patient specific factors).

  • Calcium oxolate, struvite and uric acid stones are likely to fragment and are easily passed. 
  • Other stones are less likely to be completely broken up. 
  • The location of the stone are also a factor as stones located in the lower pole of the kidney have a lower chance of being successfully treated.
  • The higher the number of stones the more likely relapse will occur. 
  • The chance of success for ureteral stones is higher but the exact location within the ureter may matter. 
  • Title: Ultrasonic instrument and kidney stone ...
    Title: Ultrasonic instrument and kidney stone Image ID: 4172 Photographer: Unknown Restrictions: Public Domain Abstract: Photograph-One 5x7 photograph, with a slip of paper taped to the back. The slip of paper describes the photograph. The caption reads: This x-ray shows the ultrasonic instrument in direct contact with a large stone in the kidney. http://fmp.cit.nih.gov/hi/ (Photo credit: Wikipedia)
  • Larger stones are more difficult to break up completely. 
One complication related to the pile up of incomplete fragments is called steinstrasse, usually occuring in patients with stones greater than 2 cm or staghorn stones. Most patients will be asymptomatic, however significant pain may occur due to repeated episodes of colic as the fragments are passed. In some cases obstruction of the ureter may lead to dysfunction of the kidney and this may require passage of a nephrostomy which is a tube to bypass the obstruction until further therapy can be done in the form of repeat lithotripsy or more invasive methods. 
Medical X-rays, kidney and ureter stones.
Medical X-rays, kidney and ureter stones. (Photo credit: Wikipedia)
Wherever a large stone burden exists there is the likelihood of infection and as such even in asymptomatic patients one should be vigilant for occult urine tract infection as early treatment is essential to prevent further complications. The epithelial lining of the ureter is frequently disrupted when it absorbs the sound wave energy used in lithotripsy. The end result is that urine is now more easily infected.

Other complications are rare and may include formation of haematoma near the kidney. Cardiovascular complications such as an irregular heartbeat may occur but are usually benign. It may however be wise for patients with aneurysmal dilations of the major arteries related to the kidneys to avoid lithotripsy. 
There is some controversy regarding the incidence of hypertension after lithotripsy particularly diastolic hypertension however no concrete recommendations have been made regarding this. 

REFERENCES.

Review Article

Complications of Extracorporeal Shock Wave Lithotripsy for Urinary Stones: To Know and to Manage Them—A Review

Department of Urology, Catholic University School of Medicine, Policlinico “A. Gemelli”, Largo F. Vito, 00168 Rome, Italy
Received 19 October 2011; Accepted 5 December 2011.
















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Thursday, August 20, 2009

What is Shock Wave Lithotripsy Treatment.

A lithotriptor machine in an operating room. O...
A lithotriptor machine in an operating room. Other equipment is seen in the background, including an anesthesia machine and a mobile fluoroscopic system (or "C-arm"). (Photo credit: Wikipedia)
So you just found out you have a kidney stone and the doctor told you that you need to have a procedure called lithotripsy and you have already started to panic. Well first things first, stop breathe and read....

Lithotripsy refers to a medical procedure that uses shockwaves to break up kidney stones. The kidney stones then pass naturally in the urine or through a tube that is inserted into the kidney called a nephrostomy tube.

The sound waves used for lithotripsy pass from the outside of the body to the inside of the body , hence a better name for the procedure would be outside of the body shockwave lithotripsy. In medical jargon this translates to extracorporeal (outside the body) shockwave lithotripsy or ESWL.

On the day of the procedure you will lie on a water filled cushion. The water will conduct the sound waves to the skin and hence to the stone after being sedated, because there may be discomfort a painkiller is also administered prior to the procedure.

In some cases a tube will need to be inserted to allow the stones to pass out of the kidney. With good planning your doctor will place this before hand if necessary, however circumstances sometime dictates that this be placed after the procedure. The procedure takes generally 1 hour and you may feel unusual sensations in the area of the stone as it absorbs the sound wave energy.

Because this is a noninvasive procedure it is generally safe, however you should be aware that the stone may be too large to break up entirely in one treatment. If the stone shatters within the kidney with sufficient energy there may be bleeding. If the kidney is damaged by the stone as it breaks up it may lead to a permanent loss of kidney function in some cases. The stones may be broken up reducing them to a size where they may now move into the narrower ureters (see diagram above) and obstruct the flow of urine leading to pain which may require another procedure. The procedure is also associated with a small risk of ulceration of the stomach and small intestine.
Break up akidney stones

Your chances of having one of these complications is low, however to minimize the risk one should inform the doctor before the procedure if you are on any medication including herbs that could increase bleeding such as aspirin, and other pain killers, green tea or ginko biloba.

You should have an empty stomach for the procedure and will receive specific instructions from your physicians about when to stop eating and when you will be able to eat again.
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Thursday, August 13, 2009

Patient Education: What causes kidney stones?


Patients may be at risk for kidney stones if:-


  • High concentrations of calcium, oxalate or uric acid in the urine.

  • Low pH (urine too acidic)

  • Concentrated urine (poor fluid intake)

  • Not eating enough calcium (you absorb too much oxalate if calcium is low)

  • Eating too much calcium

  • High sugar intake

  • High protein intake.

  • High sodium intake.


MEDICAL CONDITIONS MAY ALSO PREDISPOSE TO KIDNEY STONE FORMATION

Gout

Diabetes Mellitus

Obesity

Gastric bypass


Crohn's disease.

SOME QUICK FACTS.

If you have previously had a stone you are at increased risk for a new one.

Drinking high volumes of grapefruit juice has been linked to kidney stones.

Green tea and coffee lowers the risk

Beer and wine are ok.

A normal calcium intake may protect you from kidney stone formation

A high calcium intake causes stones as well as a low calcium intake too.

Dietary fibres such as wheat and cereal reduces risk.

Excessive vitamin C intake increases the risk

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Patient Education: Having Pain in the Kidneys, It may be Kidney Stones.

These are some of the larger passed fragments ...
These are some of the larger passed fragments of a 1-cm kidney stone that was blasted using lithotripsy. The stone was composed of calcium oxalate. (Photo credit: Wikipedia)




KIDNEY STONES IN THE NEWS.

OVERVIEW



  • Kidney stones affect approximately 12 percent of men and 5 percent of women by age 70.

  • Treatment is available to effectively manage most stones.

  • Recurrence can occur at a rate of up to 5 percent per year.



FORMATION OF THE STONE





There are different types of kidney stones.


KUB stone
KUB stone (Photo credit: Wikipedia)




When these substances are at high levels in the urine they precipitate out of solution and become solid crystals which get stuck somewhere in the tract from the kidney to the ureter and bladder, the kidney stone then forms particularly at narrow points along the way.





Usually, the stone will be moved through the tract by the flow of urine until entering the bladder and eventually be expelled.





A larger kidney stone may cause the sensation of kidney pain as it moves and damage to the walls of the ureter or bladder thus causing blood in the urine.





If the kidney stone is too large it may not enter the ureter at all.





Instead it enlarges to fill the entire kidney outflow tract called the hilum. These kidney stones may take on a specific shape like the horns of a stag. They are termed staghorn kidney stones. They may cause kidney obstruction, kidney infection and kidney failure if untreated.






KIDNEY STONE RISK FACTORS





Patients may be at risk for kidney stones if:-





  • High concentrations of calcium, oxalate or uric acid in the urine.

  • Low pH (urine too acidic)

  • Concentrated urine (poor fluid intake)

  • Not eating enough calcium (you absorb too much oxalate if calcium is low)

  • Eating too much calcium

  • High sugar intake

  • High protein intake.

  • High sodium intake.



MEDICAL CONDITIONS MAY ALSO PREDISPOSE TO KIDNEY STONE FORMATION











SOME QUICK FACTS.





If you have previously had a kidney stone you are at increased risk for a new kidney stone.



Drinking high volumes of grapefruit juice has been linked to kidney stones.



Green tea and coffee lowers the risk of kidney stones



Beer and wine are ok.



A normal calcium intake may protect you from kidney stone formation



A high calcium intake causes kidney stones as well as a low calcium intake too.



Dietary fibres such as wheat and cereal reduces risk of kidney stone formation.



Excessive vitamin C intake increases the risk of kidney stone formation.



KIDNEY STONE SYMPTOMS INCLUDE




KIDNEY PAIN

This can be very severe pain which is never quite relieved by changing position. Causing some amount of restlessness walking around or twisting and turning. The pain occurs in episodes of intensification followed by slightly reduced pain a phenomenon known as colic.







Kidney pain may be associated with vomiting or nausea.



Kidney pain is caused by obstruction of the ureters and stretching of the tissues around the kidney.



The passage of the stone through the urinary tract is associated with a downward moving of the pains which ultimately enter the flank and may even continue down to the groin. Classically described as loin to groin pain.



On the other hand..........



Some patients have large kidney stones for several years with only a dull ache or no symptoms at all. These kidney stones however can grow so large they cause a silent slowly evolving kidney failure. These kidney stones are associated with recurrent kidney infections which become more difficult to treat with time requiring removal of the kidney stone.



Blood in the urine.

Damage to the delicate tissues of the kidney and urinary tract is the cause of bleeding. Bleeding may discolour the urine making it red or near to red in the spectrum. However the bleeding may be invisible to the naked eye and require a dipstick test.





Gravel.



This refers to the passage of small kidney stones which have the consistency of gravel this is more common in uric acid kidney stones.




DIAGNOSIS OF KIDNEY STONES

Kidney Stones may be diagnosed by any of the following tests :-



A CT scan of Kidney Ureter and Bladder.


This is a non invasive test similar to an xray but more advanced. In which actual internal anatomy can be seen in 3d. Kidney stones show up easily with this test. It is also possible to learn if there is kidney obstruction or any obvious damage to the kidney at the same time. This test has a higher yield when the patient actually complains of kidney pain.





Ultrasonography of the kidney ureter and bladder.


This test is more dependent on the skill of the observer than the previous test. It is based on sound waves traveling through tissues. The kidney stone blocks the sound waves if large and can be seen as a shadow on the screen. Small kidney stones are frequently missed. This test avoids the use of radiation and may be the best choice in a pregnant patient complaining of kidney pain. Overall it is inferior to CT scan.





Plain Abdominal xray.


Moderately reliable for larger calcium containing kidney stones. Small uric acid kidney stones may be missed. This test is inferior to CT-SCAN





IVP





Dye that shows up white on xray is injected to the blood stream. It passes through the kidney and enters the urine. It outlines the areas of the urinary tract that can be filled by the dye. The kidney stone is seen as a filling defect. This test can assess to some degree function of the kidney and is the gold standard for determining if a small kidney stone is present.


Unfortunately the dye may cause a significant allergic reaction. This test is generally avoided in patients with a history of any allergies.





General testing to identify a metabolic problem as an underlying cause of kidney stones should also be done.








KIDNEY STONE TREATMENT





When kidney pain is severe the patient may have bouts of vomiting leading to
dehydration. If dehydration occurs the flow of blood through the kidney is reduced. The kidney creates urine from blood, so urine flow is further reduced this may prolong the passage of the kidney stone.





Fluid resuscitation via IV fluid should be commenced simultaneously as soon as possible. Sometimes giving lots of fluids into the vein will cause the kidney to produce more urine and flush the kidney stone out.





Kidney pain is frequently severe and is caused by muscle spasm, a muscle relaxing drug such as Baralgin, in combination with aspirin based pain killers such as Voltaren, Cataflam, Brufen should be used however strong painkillers may be required such as narcotics and if necessary given IV.





If vomiting occurs the patient is usally admitted to hospital. If the kidney stone is larger than 9 millimeters it is unlikely to pass from the kidney on its own.





If the patient passes urine it must be examined for the presence of any kidney stones by passing the collected urine through a strainer.





If the kidney stone is not passed out then a special procedure may be required such as:-





ESWL (sound waves)





- Depending on the density of the stone and postion and size the stone may be destroyed by sound waves targetted at the stone in a non invasive manner.





PNL- (microsurgery)





- Percutaneous nephrolithotomy. If the stone is very large microsurgery may be performed through small holes in the skin to break up the stone.





Ureteroscopy- (a scope is passed)





A fibreoptic scope is passed up the ureter, however it cannot reach all the way to the top of the kidney. So the stone has to be at least half way down for this to be effective.












KIDNEY STONE PREVENTION





To decrease the chances of another kidney stone:-



You need to determine the cause of the first stone and treat the problem. This is accomplished by analysing the stone to determine its primary component.





General measures such as increased fluid intake to dilute the urine and flush the kidney.





Making the urine more alkaline with lime juice or citric acid in select cases.





Dietary changes.





Surveillance with CT scan or IVP for new stones that have not yet caused a problem is possible. The smaller the stone the easier to treat.



Using the DASH diet.


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Monday, August 10, 2009

Herbal corner: Can green tea prevent kidney stones

Red, black and green tea
Red, black and green tea (Photo credit: mat.teo)
tea is more than a wonderful soothing beverage.....



Nephrolithiasis otherwise known as kidney stones are responsible for a very significant number of health issues. The lifetime risk of kidney stone formation is approximately 13% in men and 7% in women. The yearly economic cost of kidney stones has been estimated at 5.3 billion in the United States alone.
Anyone who has had a kidney stone knows it is not a pleasant occurence and would do almost anything to prevent them from recurring. Unfortunately most people are unable to comply with the large volume of water intake required to prevent stone formation. And drug therapy has provided mixed results, with some of the drugs intended to prevent stone formation causing different types of stones themselves.

Green tea has multiple health benefits but does it increase or decrease the risk of kidney stone formation?

A study published in the journal of urology has found that green tea reduces the formation of calcium oxalate stones which are the most common form of stone. It is though that this is brought about by the antioxidant effects of green tea. These finding are very similar to findings of other investigators.

How many cups of green tea should you drink, how hot should the water be, is there a difference in green teas obtained from China or Japan. There are no satisfactory answers to these questions yet. However in populations studies from the east it is proposed that the benefit of green tea particularly in prevention of cancer is approximately 5 to 6 cups per day. If the mechanism of this effect is the same then antioxidant effect may be maximal or near maximal at this dose. This should therefore be a reasonable starting point.
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Saturday, August 8, 2009

News: DASH diet reduces kidney stones.

[caption id="attachment_653" align="alignright" width="300" caption="kidney stones"]kidney stones[/caption]

Creative Commons License photo credit: manda_wong

The DASH diet which is an eating plan that follows heart healthy guidelines to limit saturated fat and cholesterol, was found to reduce the incidence of kidney stones in an article published in the august issue of the Journal of the american society of nephrology.

The study was carried out because diet is thought to play a major, yet not entirely clear role in the development of kidney stones. The dash diet was chosen because it represents a novel potential means of preventing stone formation. The increased consumption of fruits and vegetables increases urinary citrate, which inhibits calcium stone formation with a normal to high calcium intake which decreases oxalate absorption from the intestines. However due to increased levels of vitamin C (which is also associated with kidney stone formation) the researchers were unclear if the diet would have an overall beneficial effect.

The study combined three large prexisting groups of patients over 50 years of follow up. The conclusions arrived at are therefore likely to be statistically sound.

The overall conclusion of the study was that a diet high in fruits and vegetables moderate in low-fat dairy products and low in animal protein (which has been essentially replaced by plant protein including legumes and nuts) decreased the risk of kidney stone formation.

Importantly this statement was independent of age, body size, hypertension, diabetes, total caloric intake, fluid intake, caffeine and alcohol intake.
Therefore one of the most important things you can do to prevent kidneys stones is to have a healthy diet along the guidelines that have previously been put forward, see the DASH diet PDF download at the start of the article.

Friday, August 7, 2009

Herbal corner: Can URIFLOW dissolve stones





[caption id="attachment_655" align="alignright" width="300" caption="kidney stones"]kidney stones[/caption]

The herbal supplement URIFLOW has been marketed as a method of breaking up and dissolving kidney stones. It is widely available online for purchase. Reviews of its action and efficacy on the websites where it is sold has been largely positive. However some individuals claim that it provided no benefit to them. While one is unable to make a judgment of the efficacy of any product simply by consumer feedback it does give a general idea of the feeling regarding the product. Given that the feedback has been largely positive I think its appropriate to take a closer look at what might be a natural remedy for kidney stones.

Based on the URIFLOW website the ingredients are as follows.






  • •.Boerhaavia Diffusa herbs for kidney stones




  • •.Crataeva Nurvala




  • •.Tribulus Terrestris




  • •.Lawsonia Inermis




  • •.Bergenia Ligulata




  • •.Ficus Racemosa




  • •.Didymocarpus Pedicellata




  • •.Achyranthes Aspera




  • •.Raphanus Sativus




  • •.Hemidesmus Indicus -.









URIFLOW CLAIMS: Boerhaavia Diffusa - The pharmacology of this herbal extract has been extensively studied and has shown to have a dual diuretic and anti-inflammatory effect.


WE WERE ABLE TO FIND:


Evidence of





  • •.Positive immunomodulatory activity in rodents.




  • •.Possible anticancer effect in rodents on melanoma cells.




  • •.A study of herbal extracts of this drug to dissolve urinary crystals (the precursor of kidney stone formation) revealed no effect. Interestingly it was compared again other herbs which did have a positive effect non of which are constituents of uriflow.





  • •.A protective effect against radiation damage.





  • •.A possible effect that reduced breast cancer resistance to conventional chemotherapy.





  • •.Good evidence that the drug is an antispasmodic agent. (Baralgin a pharmaceutical anti-spasmodic agent is used to relax the ureters allowing the passage of a stone.)





  • •.Antifungal activity exact potency is being established.





  • •.Possible immunosuppressive activity mechanism not established.





  • •.Antidiabetic activity in rats of similar potency to mainstream pharmaceuticals.





  • •.The juice of fresh leaves has a significant pain relieving effect believed to be narcotic in nature.





  • •.Antiviral effect in plants primarily.






URIFLOW CLAIMS: Crataeva Nurvala - The water extract of the bark has been shown to cause spontaneous passage of renal and bladder stones. The triterpenoids and varunol isolated from the bark can also act as an anti-inflammatory as the stone passes.


WE WERE ABLE TO FIND:



Evidence of .






  • •.A study suggesting that the herb has properties which may aid in the dissolution of renal calculi in the upper urinary tract. However the authors suggest a phase III trial be done before making any claims.





  • •.A study showing that the bark of Crataeva nurvula has the highest antioxidant capacity among 5 Indian herbal remedies tested.





  • •.Extract of the herb was able to ameliorate against kidney injury in mice.





  • •.Inhibition of complement and hence a reduction in inflammation, possible pain relief.






URIFLOW CLAIMS: Tribulus Terrestris - There are alkaloids in this ingredient that are responsible for an increase in renal perfusion and aspartic and glutamic acid contents have shown to have stone disintegrating properties.



N.B Of concern this herb has been found to cause motorneurone disease in sheep. We do not know if this can occur in humans. However many of the potential benefits of herbs are derived from their effect in animals. If you accept the positive effects you must be willing to accept the negative effects.


We were able to find the following evidence.





  • •.The herb lowers blood pressure in rats and has an effect similar to viagra on the dilation of blood vessels.




  • •.It increases sexual desire and performance in rats.




  • •.It modulates receptors for testosterone




  • •.It was implicated in a case of a male growing breasts ( gynaecomastia). This suggests it may have an effect on sex hormones maybe due to its effects to modulate testosterone.






URIFLOW CLAIMS: Lawsonia Inermis - An alcoholic extract of the leaves has shown to have an effective anti-bacterial activity that has been confirmed in three separate clinical studies.


This is otherwise known as henna.



We were able to find the following evidence .




URIFLOW CLAIMS: Bergenia Ligulata - Shah et al has concluded in an independent study that an exact concentration of crude extract has marked antilithic property in dissolving preformed stones



We were able to find th efollowing evidence.





  • •.Mechanism of the anti kidney stone effect of this herbal remedy was proven to be due to inhibition of calcium oxalate crystallization in rats.




  • •.Among other studies.





URIFLOW CLAIMS: Ficus Racemosa An extract from the bark has clinically been validated as an effective carminative and can help ease gripping pains.



We were able to find evidence of.






Didymocarpus Pedicellata - The active compound in this extract known as Pedicellic acid has been established as a successful treatment for kidney stones



Evidence of being a potent antixodant



Achyranthes Aspera - The extract from the seeds have saponins which have proven to have a stimulating effect on the kidneys and can help in flushing out gravel.



We were able to find evidence of.






Raphanus Sativus - Several studies report the antibacterial effect against S.aureus, E.coli, Ps. aeruginosa, S.typhi and B.sublitis which can help prevent urinary infections from erupting after a stone passage.



Good evidence of the main claim in terms of its effect against bacteria in the pub med database



Hemidesmus Indicus - An aqueous extract has shown to increase urinary output within the kidneys that can aid in calculi being flushed out






  • •.One study showed that it does not have anti diuretic effect in fact has an anti diuretic effect leading to increased water uptake from the intestine of rats




  • •.It could be argued that this retention effect on fluids would lead to more fluid being excreted through the kidney. However no study has shown this in the pubmed database.




  • •.No studies examining the effect of kidney stone formation could be found.






OVERALL VERDICT.



This herbal preparation was marketed to patients suffering from kidney stones. It claims to decrease the size of kidney stones so that they may be passed out.


Several of the herbs utilized as ingredients do have the effect of decreasing kidney stone formation as well as increasing the solubility of kidney stones under laboratory conditions in experimentally created kidney stone disease in rats.


Some herbs utilized have been shown to relax smooth muscle possibly reducing the pain associated with passage of the kidney stone and allowing kidney stones to pass. There are already several pharmaceutical agents that provide this same effect and there efficacy in humans is determined by the size of the kidney stone. Kidney stones above 9 mm in diameter being very unlikely to pass. It is conceivable that the kidney stone may be reduced in size depending on the efficacy of the other ingredients in humans which remains unknown.


Unfortunately some of the herbs were found to have possibly dangerous effects in experimental animals such as motor neurone disease. One of the herbs was found to have hormonal effects that lead to gynaecomastia and another herb was found to have toxic effects on the heart. Interestingly the toxic effects were demonstrated in humans unlike the many beneficial effects demonstrated in rats. This may have been due to bias in motivation of investigators to perform the studies in the first place as negative effects need to investigated quickly. While claims of positive effects are put through a longer series of methodological proofs.



At this time the FDA has released the following.












Public Health Service Food and Drug Administration College Park, Maryland 20740




NOV 07 2006



CERTIFIED MAIL RETURN RECEIPT REQUESTED


Vikram Sodhi Uriflow Online, Inc. aka BioNeutrix Healthcare 2774 A Coney Island Avenue Brooklyn, New York 11235


Ref. No. CL-06-HFS-810-235


Dear Mr. Sodhi:


This is to advise you that the Food and Drug Administration (FDA) has reviewed your web site at the Internet address http://www.uriflow.com and has determined that the product “Uriflow™” is promoted for conditions that cause the product to be a drug under section 201(g)(1) of the Federal Food, Drug, and Cosmetic Act (the Act) [21 U.S.C. § 321(g)(1)]. The therapeutic claims on your web site establish that the product is a drug because it is intended for use in the cure, mitigation, treatment, or prevention of disease. The marketing of this product with these claims violates the Act.


Examples of some of the claims observed on your web sites include:


Uriflow™ “Kidney StoneTreatment [sic] That Dissolve & Flushes OutStones [sic] -Quickly Painlessly!”


How URIFLOW™ Flushes Out Stones”


Uriflow™ acts on the stone's surface to disintegrate it and then uses the kidney's own functions to flush them out quickly & painlessly...”


Uriflow™ is the only dissolvent on the market that controls the kidneys [sic] internal environment and directs minerals and pH levels into a stone disintegrating (non-lithogenic) state. It's unique 4-Step therapeutic action makes Uriflow the most complete kidney stone treatment anywhere:”


Works on stone surface To break it down” “Uriflow™ has specific ingredients that are targeted to cause the stones tiny particles to separate by micro-pulverization and dissolve back into your urine. As soon as you take Uriflow™ it immediately goes to work within your kidneys and begins to mobilize the stone by shrinking it.”


It doesn't stop there, once the stone becomes smaller it stops pushing against the sensitive urinary lining and starts moving with ease without causing damage or pain.”


Flushes Out Stone Fragment With Urinary Flow”


Once reduced to gravel, kidney stones are easily flushed out.”


Specific ingredients in Uriflow™ cause the kidneys to naturally increase urine output so that the gravel can be flushed out quickly and painlessly.”


Prevents Urinary Infections By Protecting The Tract”


Usually when a kidney stone has passed without treatment, there is a good chance that there will be a burning sensation from the painful exit. This is a sign of a urinary infection caused by the irritation to the urinary tract.”


The revolutionary Uriflow™ formulation has properties that protect the urinary system from any such infections or inflammation.”


Not only does the stone shrink in size so that irritation is relieved, but Uriflow™ also has anti-microbial properties that prevent harmful bacteria from infecting the urinary tract.”


Dr. Saini Malta Board Certified Urologist Hope Medical Clinic “A very effective aid for eliminating kidney stones. In my professional opinion Uriflow is a tremendously helpful solution to anyone with kidney stones. I have been recommending it with great success so far”.


Prevents Your Kidneys From Forming Stones Again”


Until recently there was no way to help your condition and prevent stones from occurring again. Since kidney stones recur in almost 70% of patients, it is of extreme importance to prevent them.”


Finally, there has been a remarkable breakthrough in kidney stone prevention. Uriflow™'s 100% natural formulation has been designed so that it can also be taken as a daily supplement to prevent stones from occurring in the future.”


Keep your kidneys well flushed and protect your urinary system from infections. With Uriflow™ your kidneys can function optimally and you will never have to worry about painful kidney stones again.”


Try Uriflow™ risk - free today and you too can enjoy a healthier, noticeably better quality of life, free from kidney stones”


Over 80,000 Successful Cases For Uriflow™ Customers Who Flushed Out Their Stones”


The 10 Best Ways To Find Kidney Stone Relief At Home”


Furthermore, your product is not generally recognized as safe and effective for the above referenced conditions and therefore, the product is also a “new drug” under section 201(p) of the Act [21 U.S.C. § 321(p)]. New drugs may not be legally marketed in the U.S. without prior approval from FDA as described in section 505(a) of the Act [21 U.S.C. § 355(a)]. FDA approves a new drug on the basis of scientific data submitted by a drug sponsor to demonstrate that the drug is safe and effective.


FDA is aware that Internet distributors may not know that the products they offer are regulated as drugs or that these drugs are not in compliance with the law. Many of these products may be legally marketed as dietary supplements if claims about diagnosis, cure, mitigation, treatment, or prevention are removed from the promotional materials and the products otherwise comply with all applicable provisions of the Act and FDA regulations.


Under the Act, as amended by the Dietary Supplement Health and Education Act, dietary supplements may be legally marketed with truthful and non-misleading claims to affect the structure or function of the body (structure/function claims), if certain requirements are met. However, claims that dietary supplements are intended to prevent, diagnose, mitigate, treat, or cure disease (disease claims), excepting health claims authorized for use by FDA, cause the products to be drugs. The intended use of a product may be established through product labels and labeling, catalogs, brochures, audio and videotapes, Internet sites, or other circumstances surrounding the distribution of the product. FDA has published a final rule intended to clarify the distinction between structure/function claims and disease claims. This document is available on the Internet at <http://vm.cfsan.fda.gov/~lrd/fr000106.html> (codified at 21 C.F.R. § 101.93(g)).


In addition, only products that are intended for ingestion may be lawfully marketed as dietary supplements. Topical products and products intended to enter the body directly through the skin or mucosal tissues, such as transdermal or sublingual products, are not dietary supplements. For these products, both disease and structure/function claims may cause them to be new drugs.


Certain over-the-counter drugs are not new drugs and may be legally marketed without prior approval from FDA. Additional information is available in Title 21 of the Code of Federal Regulations (21 C.F.R.) Parts 310 and 330-358, which contain FDA's regulations on over-the-counter drugs.


This letter is not intended to be an all-inclusive review of your web site and products your firm markets. It is your responsibility to ensure that all products marketed by your firm comply with the Act and its implementing regulations.


If you need additional information or have questions concerning any products distributed through your web site, please contact FDA. You may respond in writing to Linda J. Webb, Compliance Officer, Food and Drug Administration, Division of Dietary Supplement Programs, 5100 Paint Branch Parkway, College Park, Maryland 20740-3835. If you have any questions concerning this letter, please contact Ms. Webb at (301) 436-2375.


Sincerely yours,


/s/


Vasilios H. Frankos, Ph.D. Acting Director Division of Dietary Supplement Programs Office of Nutritional Products, Labeling and Dietary Supplements Center for Food Safety and Applied Nutrition



They recognize that this agent does have effects and that these effects need to be regulated.


Also many of the herbs have effects which are broad involving multiple systems in clude blood pressure reduction and reductions in blood sugar. These systems are also targetted by several prescription medications and the chances of interaction are high.



URIFLOW is therefore a mixed bag and should be used with extreme caution if at all.