When to take Vitamin C
Pinned to morning, the best window for Vitamin C.
Why timing matters
Single doses above ~500mg saturate transport and the rest is excreted, so split dosing matters more than slot.
Morning vs. night
Morning is conventional and pairs naturally with iron. Evening doses are fine too.
Why without food
Water-soluble; food is optional but reduces stomach irritation for sensitive users.
Recommended schedule
7:00–8:00 AM
250–500mg with breakfast or with iron
Afternoon
Second 250–500mg dose if total exceeds 500mg daily
Don't take with
- • B12 at the same exact moment (high-dose C may reduce B12 absorption)
FAQ
Buffered or liposomal?
Buffered (sodium/calcium ascorbate) is gentler on stomach; liposomal claims higher absorption with less GI upset.
Megadose for colds?
Routine high doses don't prevent colds in most adults but may shorten duration slightly per Cochrane review.
With iron?
Yes. Vitamin C reduces non-heme iron to its absorbable form and can triple uptake.
Sources
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