Vitamin C

There is no vitamin C posture rule. The advice was written in 1986 about four other drugs. Here is where it came from and the part worth keeping.

No trial has ever compared retinol with vitamin C for aging skin. Here is what each is actually shown to do, and where the evidence runs out.

What time is too late to take vitamin C? There is no cutoff. The pharmacology behind why, what does change at night, and when timing actually matters.

What exactly is liposomal vitamin C? The same ascorbic acid in a phospholipid shell — and a category of formulations, not one technology.

What does taking liposomal vitamin C do? It raises blood levels 1.3 to 7.2 times — and your cells by far less. What the research shows, and where it stops.

What does liposomal do to your body? How liposomes cross the gut wall, what the research shows about absorption, and what happens to the shell itself.

What diseases can vitamin C prevent? Just one — scurvy. What the randomized trials actually found on colds, heart disease, cancer and eye disease.

Vitamin C deficiency can cause fatigue, irritability and low mood, and in scurvy, nerve and movement problems. What the evidence shows, and what else to rule out first. 

Is liposomal vitamin C better in liquid or pill form? No trial has compared them directly. What the research actually shows, and how to choose between them.

How often should you take vitamin C per day? Once is enough for most adults. Splitting only earns its keep above roughly 500 mg at a time.

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.