Lit-Control pH Down acts immediately to inhibit the growth of crystals in the urinary system, while allowing the pH of the urine to decrease (acidify). Decreases the pH of urine. Helps reduce the risks of alkaline urine. Allows you to maintain good urinary health. The patented formulation of Lit Control pH Down contains L-methionine that lowers urinary pH for people who form stones due to urine that is too alkaline or as a result of a urinary infection such as infectious stones. This acidification of the urine together with phytate, a powerful crystallization inhibitor, prevents the formation of crystals in the urinary system. Lit-Control pH Down helps maintain good health of the urinary system in stone patients. How to use: Take one Lit-Control pH Down capsule twice a day with a glass of water during breakfast and dinner. Contact your doctor if you need to adjust the dose. It is recommended to continue taking the product for at least 6 months after having renal colic or until your next visit with your doctor.