Vitamin C

Does vitamin C tighten saggy skin? No. The one trial to measure elasticity found a small dip, not a gain. Sagging is an elastin problem, not a diet one.

Does vitamin C make you sleepy or awake? Neither, in any way a trial has shown. What the sleep studies actually found, and the one real link to tiredness.

Vitamin C builds the collagen in artery walls, but trials found no drop in cardiovascular events. What it does, what it can't, and where evidence stops.

Do you really need liposomal vitamin C? For most people, no. Only 6.8% of US adults are deficient, and the format only earns its keep past the ceiling.

Can I drink water after taking vitamin C tablets? Yes — and a full glass beats a sip. What water does and doesn't change, plus the two real exceptions. 

Why do I feel so good after taking vitamin C? Usually it is not the vitamin, unless you were low. What the trials found, and what else changed that week.

What medications cannot be taken with vitamin C? The NIH gives two examples, one warning on the standard list runs the other way, and lab tests matter more.

Intravenous is fastest, but among oral doses smaller is 
quicker: 30mg peaks in 25-50 minutes, 500mg takes four hours. Liposomal 
absorbs more, not sooner.

What has 6000 times more vitamin C? Nothing does — the figure is astaxanthin's antioxidant potency, not vitamin C content, and it traces to one 2007 study.

What happens if your vitamin C is very low? Energy fails first, then collagen, then immunity and iron. The timeline down, and how fast it reverses.

What happens if you take vitamin C and you don't need it? Mostly nothing — you excrete the surplus. Fewer than 3% of Canadian adults are deficient.

A 79-cultivar screen put Marie Joseph d'Othee highest at 26.7 mg per 100 g. The ranking shifts by orchard and year, and peeling or cooking costs far more.