¼ tsp supplies 1,000 mg of ascorbic acid, which is half the recognized adult tolerable upper limit. Oxidized Vitamin C, such as from ready-to-drink orange juice, is not freely absorbed across the intestinal mucosa, making supplementation a more reliable resource. Other doses may be recommended by your health care provider.
Warnings: Side effects of Vitamin C Crystals are dose-dependent and GI-related, including nausea and diarrhea from osmotic absorption that pulls water into the colon. In some people, Vitamin C overdoses may precipitate oxalate, urate, or cysteine kidney stones. There are no side effects at recommended doses. Vitamin C increases chromium uptake. It should not be taken in the presence of high-dose acerola and rosehips to avoid overdose.