About vitamin c l ascorbic acid
Water-soluble vitamin
Used for
- Prevention and treatment of vitamin C deficiency
- Supports collagen formation and iron absorption
Usual adult dose
For deficiency, commonly 100–250 mg daily; higher doses may be prescribed.
Usual dose in children
For deficiency, commonly 100–300 mg daily, depending on age and clinical need.
Common side effects
- Stomach upset
- Diarrhoea
- Nausea
Important warnings
- High doses can increase kidney-stone risk, especially with kidney disease.
- Effervescent tablets may contain substantial sodium; check the label.
- Long-term high doses can affect some laboratory test results.
Pregnancy
Usually safe at recommended dietary amounts; avoid high doses unless advised by a clinician.
Breastfeeding
Usually compatible at recommended dietary amounts; avoid high doses unless advised by a clinician.
Interactions
- Iron supplements: vitamin C increases iron absorption.
- Aluminium-containing antacids: vitamin C may increase aluminium absorption.
- Warfarin: large or changing vitamin C doses may affect anticoagulation.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.