Ascorbic Acid (Vitamin C): MedlinePlus Drug Information

Ascorbic acid comes in extended-release (long-acting) capsules and tablets, lozenges, chewable tablets, chewable gels (gummies), and liquid drops to be given by mouth. It usually is taken once a day or as directed by your doctor. Ascorbic acid is available without a prescription, but your doctor may prescribe ascorbic acid to treat certain conditions. Follow the directions on the package or on your product label or doctor’s instructions carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take ascorbic acid exactly as directed. Do not take more or less of it or take it more often than recommended by your doctor.

It may take up to 4 weeks for symptoms of scurvy to improve.

Ascorbic acid supplements are available alone and in combination with other vitamins.