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Strong evidenceVitamins

Vitamin C

Also called: Ascorbic acid, amla extract

An antioxidant vitamin for immunity and skin, and it helps the body absorb iron from plant foods.

Typical amount
100–500 mg a day (RDA 65–80 mg)
Best time
Any time; take with iron to help absorption · Timing guide
Food
With or without food
Typical course
8 weeks, then review
Upper limit
2,000 mg a day
Is it right for me?

Where to buy

3 products
Also inside 17 other products (combinations and multivitamins)

What is Vitamin C?

Vitamin C supports immune cells, helps make collagen for skin and wound healing, and boosts absorption of iron from plant foods. The body doesn't store much, so regular intake matters. Smokers need more.

Forms. Tablets, chewables and effervescents. Natural sources like amla extract are common in India.

What it may help with

Evidence grade

Strong: several good human trials. Moderate: some trials, mixed results. Limited: small or early studies. Traditional: long use, little trial evidence.

Safety and interactions

Side effects
Stomach upset or loose stools above about 1–2 g a day. High doses may raise kidney stone risk in some people.
Who should be careful
Kidney stones: keep doses low
Medicines
Keep it 3 hours apart from antibiotics.
Stop and call a doctor if
Severe diarrhoea, kidney pain

Food sources

Amla, guava, oranges, lemon, papaya, capsicum, tomatoes and green leafy vegetables.

Common questions

Does vitamin C prevent colds?

It doesn't prevent most colds, but regular intake may shorten them a little.

Should I take it with iron?

Yes, it helps your body absorb iron.

How much do I need?

Most adults need 65–80 mg a day; an amla or a guava covers it.

Sources

For information only, not medical advice. Prices and links are checked by hand and can change; we may earn a small commission on some links. This plan is based on your answers and is not a medical diagnosis. It does not replace advice from your doctor. If you take medicines or have a health condition, check with your doctor before starting any supplement.