whats your take on prolonged released vc? Was thinking of adding some to my supplement regime at nighttime so I can have it release evenly while I sleep.

This graph comparing serum levels from a single 5 gram regular vs. lip C from this other thread indicates that with 5 g regular vit C significantly higher levels are reached between 1 to 4 hrs, thereafter declining not that much for usual sleeping hours.



Extended release vit C tablets are usually only 1g, where I wouldn't want to take more than 1, because of the usual additives for such tablets.

But I wondered if taking plain ascorbic acid with some fibers, like psylium, guar or propolmanan, could not also slow digestion and absorption of much higher doses?

Or would the fibers even inhibit absorption of vit C?

I tried 4 including 1 from my doc, all showed higher glucose levels in relation to HBA1c.

But that wouldn't tell anything, unless you theoretically could keep everything constant: from food intake, continual digestion, gluconeogenesis, activity level etc.. Once I fasted for one week, the thing which kept fluctuating were blood glucose readings completely unrelated with my vitamin C intake.

But testing vit C serum levels wouldn't be that expensive, if done a few times only.

However, maybe someone already knows if fibers would help slow (or inhibit) absorption of vitamin C?

I take lypo c, ascorbic acid powder, and as of May 24th I have added prolonged release vc pills. I take 5 1000mg vc xr pills around lunch and 5-10 before I sleep. I am worried about all the fillers so maybe I will just take 5 at bed time. Is 5 still to much Owen due to fillers?

Owen have you ever heard of "bed pan bullets"? I am worried about that with slow released products because if a slow release product isn't manufactured correctly, it may not dissolve completely or at all in the body from what I understand.