Vitamin C

Your immune cells hold 50-100x more vitamin C than your blood. What that means for the vitamin C immune system link, and what supplementing really does.

What vitamin C side effects the research actually documents, why the 2,000mg upper limit exists, and the few groups who need to be careful.

Ascorbic acid, buffered, Ester-C or liposomal? A research-backed comparison of the main vitamin C forms, what each costs you, and who funded the studies.

Liposomal vitamin C absorbs better than regular vitamin C in nine of ten trials. What the evidence supports, what it does not, and the dose where it matters.

Description: The RDA is 90mg, research points to 200mg, and the safe ceiling is 2,000mg. A practical vitamin C dosage guide — and why absorption changes the maths.

Your body absorbs nearly all of a 200mg vitamin C dose, but under 50% above 1 gram a day. See how absorption and kidney excretion decide what you keep.

Nearly half of US adults have insufficient vitamin C. Discover how liposomal vitamin C improves absorption, supports immunity, and why standard supplements often fall short.