TimingVitamin C

Anytime, stay consistent

When to take Vitamin C

Anytime; split larger doses

Vitamin C supports immunity, collagen and iron absorption. Your body absorbs smaller doses better, so split larger ones.

Updated 2026-10-25

Best time in your day

Any time of day: pick a time that suits you and keep it the same every day.

When
Anytime; split larger doses
Food
With or without food
Typical dose
100–500 mg per day; split doses above 500 mg

How to take it

  1. 1Take 100–500 mg once daily
  2. 2Split doses above 500 mg
  3. 3Pair it with iron if you take iron
  4. 4Choose buffered C if it upsets your stomach

Watch out

Doses above 1 g per day can raise kidney stone risk in some people.

Keep apart from

  • Haemochromatosis (iron overload)

Common questions

Does it prevent colds?

Regular use slightly shortens colds; it doesn't prevent them for most people.

Why pair with iron?

It makes plant iron easier to absorb.

Is liposomal better?

It may raise levels a little more.

Explore further

Commonly used for

Sources

  1. NIH Office of Dietary Supplements: Vitamin C fact sheet for health professionals

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For general education only, not medical advice. Talk to a qualified doctor before starting or changing supplements, especially if you are pregnant, nursing or on medication.