How To Pass Urine Drug Test With Cranberry Juice

Cranberries have long been known as a beneficial supplement, particularly in the treatment of urinary tract infections. Cranberries are available in forms such as fresh berries, pills, dried, juice, and liquid concentrate. It is cranberry juice, in particular, that has become a popular home remedy to pass urine drug screenings.

Ingredients Needed

Cranberry juice, which is usually less than five dollars a bottle, and water. Note that commercially processed cranberry juice drink contains only a small percent of actual cranberry juice, and sources recommend natural brands with higher cranberry juice content, which is listed on the product’s label.

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The method involves drinking large quantities of both cranberry juice and water in the hours before a urinary drug test.

Side Effects

Drinking large amounts of cranberry juice can cause gastrointestinal issues such as diarrhea. Drinking large amounts of water in a short time can lead to a potentially fatal condition known as hyponatremia, which is an imbalance of electrolytes in your body.

Potential Interactions

If you are being treated for any condition of the urinary tract – including the bladder, kidneys, ureters, and urethra – it is best to avoid drinking large amounts of cranberry juice. Cranberry juice may have negative interactions with medications taken for heartburn or GERD, as well as blood thinning medications such as Coumadin (warfarin).

Scientific Evidence

Part of the mythology of drinking cranberry juice stems from the fact that it was believed to cure or aid in the treatment of urinary tract infections because it increased the pH of your urine. Scientific research has shown that cranberry may not, in fact, significantly raise the pH of your urine, but instead inhibits the growth of E choli bacteria in the urine by preventing the bacteria from adhering to the bladder wall and allowing it to be flushed out in the process of urination. Drinking cranberry juice does not have any effect on marijuana or its metabolites.


Some of the websites that tout drinking cranberry juice as a way to pass a drug test cite the juice’s ability to raise the pH of your urine as a way to mask THC and its metabolites. First, it is not known whether cranberry juice has a significant impact on the pH of your urine. Second, raising the pH of your urine does not mask THC or its metabolites (THC or tetrahydrocannabinol is the main mind-altering ingredient found in the marijuana). Raising the pH of your urine puts you at risk of failing the urine validity test, which then puts you at risk of being retested under suspicion of diluting your urine.


Cranberry juice has long been used as a home remedy for urinary tract infections, and it seems as if this has led the juice to acquire a reputation as a way to detoxify your body of drugs and drug metabolites. The actual reason that cranberry juice is effective in urinary tract infections, however, is the effect that the juice has on the bacteria causing the infection. Cranberry juice is not going to mask or rid your body of THC or its metabolites.

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