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Vitamin C (vitamin) for prevention of Exercise-induced breathlessness in Adults with Asthma

  • -  Tooltip icon - Capsule icon


    Bottom Line

  • Treatment with Vitamin C (Ascorbic acid tablets). Unclear benefits. May relief symptoms according to 3 poor quality studies with only 40 adults. More research is needed. Seems safe.

    • -  Evidence icon EVIDENCE | POORLY TESTED
    • -  Effectiveness icon EFFECTIVENESS | UNCLEAR
    • -  Safety Circle icon SAFETY | SAFE -  Tooltip icon Consult a Doctor


Consider this treatment:

Unclear impact. Only 3 small researches were done, showing some benefits. More research is needed. Side effects seem negligible, therefore it makes sense to try taking 1-2 grams of Vitamin C one hour before exercise and to see if it helps.

Doctors Say That -  Tooltip icon

Exercise-induced breathlessness is common in Asthmatic patients, but also occurs to non-Asthmatic people. If you suffer from wheezing, shortage of breath and coughing during and following physical practice, ask your doctor to check if you are asthmatic. If you are not - try using a Ventolin HFA inhaler 30 minutes before practice, and see if it helps you.

Any excess of Vitamin C (Ascorbic acid) is evacuated from our body through the urine. This makes vitamin C pretty safe even in high dosages.

About Vitamin C (vitamin)

Ascorbic Acid tablets

  • - Population icon

    Target Population:

    Adults with Asthma, 16 to 65 years old

  • - Dosage icon


    0.5-2 mg before exercise

  • - Goal icon


    Prevention of exercise-induced breathlessness (Bronchoconstriction)

Research Summary

  • - Green Pages icon Poorly tested
  • 3 Clinical Studies
  • 40 - Tooltip icon Adults Tested
  • Unclear
  • Benefits:

    May ease breathing after exercise, according to 3 poor quality studies with only 40 participants. More research is needed.

  • - Safety icon Safe
  • Risks:

    Up to 2 grams of Vitamin C per day seems safe for adults and has no side effects. Doctor consultation is needed for diabetic adults or when in taking iron.

Exercise-induced breathlessness Overview

  • - Medical Problem icon

    Medical problem:

    Exercise-induced breathlessness (Bronchoconstriction and related symptoms)

  • - Sumptoms icon

    Symptoms and signs:

    Cough, low energy, rapid breathing, shortness of breath and wheezing.

  • - Complications icon


    Permanent narrowing of the bronchial tubes, respiratory arrest, hospitalization, death

Other Treatments

Brand Names

Vitamin C (supplement)

  • Ascoltin
  • Ascot
  • C-500 Chewable Tablet
  • C-Time
  • Cecon Drops
  • Centrum Singles - Vitamin C
  • Cevi-Bid
  • Sunkist Vitamin C
  • Vicks Vitamin C Drops
  • Ester-C
  • Vasoflex HD
  • Acerola
  • Ascocid
  • Ascor L 500
  • Ascorbic Acid Quick Melts
  • Betac
  • Cemill
  • Cenolate

Additional Information

Vitamin C

Vitamin C, also known as ascorbic acid and L-ascorbic acid, is a vitamin found in food and used as a dietary supplement. As a supplement it is used to treat and prevent scurvy. Evidence does not support use in the general population for the prevention of the common cold. It may be taken by mouth or by injection. It is generally well tolerated. Vitamin C was discovered in 1912, isolated in 1928, and first made in 1933. (source)

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