**LEMON: Benefits, Side Effects, Uses, Dosage, Warnings?** Lemons are healthy - they provide plenty of vitamin C, vitamins of the B complex, potassium, iron, calcium and magnesium. If you want to secure these benefits, simply enter a lemon into the water that you drink. Lemon juice can in the long term ... instructions." To succeed with the Master Cleanse detox diet and benefit from it, you should follow the program exactly. The first step is to follow the rules exactly.