drugs that can affect a marijuana screen
D - diuretic. A diuretic is defined as any substance that increases urine output. Caffeine, cranberry juice, and most quick flush herbal teas marketed as detoxifiers are diuretics. Water, though also effective in helping marijuana smokers beat the test, is not a diuretic. Consuming diuretic fluids just prior to taking a urine test dilutes the concentration of drug metabolites in the sample below the threshold of detection. However, this effect is only temporarily.