Over the counter solutions for urine drug testing?

Ready Clean can be purchased at most smoke shops and can mask a test. take it 4 hours before and it cleans you out for a few hours. Niacin is a vitamin you can buy over the counter at most pharmacys, take it for maybe a week before, 2000-2500 mg a night. Or Golden seal, also over the counter at most pharmacys is a beverage that will clean you out in 2 days, take a few shots of it before a test and youll be clear.