Citrate is a compound produced by the human body, as well as absorbed from the diet. It complexes with calcium in urine and hinders calcium crystallization. As such, citrate is a potent inhibitor of urinary stone formation. Your recent 24-hour urine collection revealed low levels of citrate. Therefore, we recommend citrate supplementation. Pharmaceutical preparations exist for citrate therapy. If you and your doctor decide on one, he will provide you with a prescription.
Alternatively, you can drink lots of citric-containing juice every day. Beverages high in citrate content (in decreasing order) include: lemon, raspberry, grapefruit, cranberry, orange, and pineapple juice. As an example, 3 ounces (2 tablespoons = 1 ounce) of reconstituted lemon juice (mixed with water and sugar to taste if desired) contains 63 mEq of citrate.
Revised 10/8/2010 JMH