Ascorbic Acid

Ascorbic Acid
Ascorbic Acid

Uses of Ascorbic Acid

Ascorbic acid is used to prevent and treat scurvy, a disease caused by a lack of vitamin C in the body.

This medication is sometimes prescribed for other uses; ask your doctor or pharmacist for more information.

Side Effects of Ascorbic Acid

Ascorbic acid may cause side effects. Tell your doctor if either of these symptoms is severe or does not go away:

  • diarrhea
  • upset stomach

Warnings & Precautions

Before taking ascorbic acid:

  • tell your doctor and pharmacist if you are allergic to ascorbic acid or any other drugs.
  • tell your doctor and pharmacist what prescription and nonprescription medications you are taking, including other vitamins.
  • tell your doctor if you have or have ever had kidney stones. Diabetics should talk to their doctor or pharmacist about the correct way to test their urine while taking large amounts of ascorbic acid.
  • tell your doctor if you are pregnant, plan to become pregnant, or are breast-feeding. If you become pregnant while taking ascorbic acid, call your doctor.


  • Ascorbic acid comes in extended-release (long-acting) capsules and tablets, lozenges, syrup, chewable tablets, and liquid drops to be given by mouth. It usually is taken once a day. Follow the directions on the package or on your prescription label carefully, and ask your doctor or pharmacist to explain any part you do not understand. Take it exactly as directed. Do not take more or less of it or take it more often than prescribed by your doctor.
  • Some tablets should be chewed; other tablets and capsules should be swallowed with a full glass of water.
  • It may take up to 3 weeks for symptoms of scurvy to improve.


Keep all appointments with your doctor.

Do not let anyone else take your ascorbic acid. Ask your pharmacist any questions you have about refilling your prescription.

It is important for you to keep a written list of all of the prescription and nonprescription (over-the-counter) medicines you are taking, as well as any products such as vitamins, minerals, or other dietary supplements. You should bring this list with you each time you visit a doctor or if you are admitted to a hospital. It is also important information to carry with you in case of emergencies.


All information has been provided courtesy of MedLinePlus from the National Library of Medicine and from the FDA.