I've heard that it does. Like mixing one in with a water after you drink a water? my friend said it worked for him.
the only personal ones i knwo that work for sure is niacin. you can get it at walmart in like the vitamin section. it's a flushing thing and i took one the night before my drug test and two on the day of it and pased it. just drink plenty of water and i smoke regularly so yeah.
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