Vitamin C

What is Ester-C vitamin used for? The same jobs as any vitamin C. Its real edge is a gentler stomach, not better absorption. See what the research shows.

Is vitamin C good for hair growth? It helps if you're low. See what deficiency does to hair, why iron matters more, and what the research hasn't shown. 

The best foods high in vitamin C, what storage and cooking strip out before you eat them, and why 41.8% of US adults still have insufficient blood levels.

Can I take vitamin D and C together? Yes. Learn why they don't compete, how to time them with food, what immune research shows, and which limits to respect. 

Vitamin C interactions with warfarin, statins, chemotherapy, antacids and thyroid medication — what the research shows and when to involve a physician.

Vitamin C iron absorption is real but meal-specific. What the radioisotope data shows, why whole-diet trials disagree, and what moves iron most.

The best foods high in vitamin C, how much storage and cooking take
before you eat them, and why 41.8% of US adults still fall short.