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Vitamin C (Ascorbic Acid): uses, side effects & brands
Vitamin C supports immunity, wound healing and iron absorption. It belongs to the Vitamin & supplement group. Supplements correct deficiencies and support health when diet or absorption falls short.
Drug type — dosing is set by your doctor
| Measure | Range |
|---|---|
| Drug class | Vitamin & supplement |
| Type | Prescription |
| Dose | Individual — ask your doctor or pharmacist |
What it is used for
- Preventing and treating vitamin C deficiency (scurvy)
- Improving iron absorption
- Supporting wound healing
Common brand names
- India: Limcee, Celin, Redoxon
- Worldwide: Redoxon, Emergen-C
Common side effects
- Stomach upset or diarrhoea with high amounts
- Heartburn
- Kidney stones (with high, long-term use)
Before taking it — precautions
- Tell your doctor about kidney stones or kidney disease
- Tell your doctor about haemochromatosis (iron overload) or G6PD deficiency
- Effervescent tablets may contain sodium; check with your doctor if on a low-salt diet
When to see a doctor urgently
- Pain in the side or back with blood in urine (possible stone)
- Swelling of face or throat (urgent)
- Severe diarrhoea or dehydration
Not a prescription — no dose shown. The right dose of vitamin c depends on age, weight, kidney/liver function and the condition, so MedDroid does not show a dose here. Always get your dose from a doctor or pharmacist and the leaflet inside the pack. General educational information only.
Frequently asked questions
Does vitamin C prevent colds?
For most people it does not prevent colds, though regular use may slightly shorten them.
Can I take vitamin C with iron tablets?
Yes, it can help iron absorption. Your doctor may suggest taking them together.
Can too much vitamin C be harmful?
High amounts can cause diarrhoea and may increase kidney stone risk in some people.
Explore more
Sources & further reading
- World Health Organization (WHO)
- MedlinePlus — U.S. National Library of Medicine
- Ministry of Health & Family Welfare, India
- Indian Council of Medical Research (ICMR)
Reviewed by Dr. Sanjay Anbu, MBBS. MedDroid is an AI medical assistant and can make mistakes. It provides general health information, not a diagnosis or medical advice — always consult a qualified clinician. In an emergency, contact your local emergency number immediately.