mr.cooper69
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You should dose anything more than 500 mg well away from workouts though. Like maybe take your biggest doses upon waking or before going to bed
Agreed. Anything with COX-2 inhibiting properties (anti-inflammatories typically fall in this category) should be dosed ~4 hours peri-workout.
No real evidence to suggest mega-dosing actually works beyond that of placebo, although it isn't well researched so who knows; but at those dosages, the half life would be incredible low.
Edit: It seems as though the ascorbyl radical itself (technically a prooxidant) is not overly potent due to the position of the free radical group
I think many people get carried away with Vit C supplementation and assume that because it is so good at lower dosages; it must be better at higher dosages.
Vit C also doesn't preserve eNO2 per se, that is a function of any antioxidant; not just that of Vit C.
I didn't say they were placebo, what I meant was that there is very limited evidence that superdosing vit C will yield any further benefits than 200mg-500mg-1000mg or whatever the recommendation is. Those benefits occur at the daily recommended dose regardless, that doesn't mean the effects are enhanced the more you take. Or are they? lol
Ann Intern Med. 2004 Apr 6;140(7):533-7.
Vitamin C pharmacokinetics: implications for oral and intravenous use.
Padayatty SJ, Sun H, Wang Y, Riordan HD, Hewitt SM, Katz A, Wesley RA, Levine M.
Source
National Institute of Diabetes and Digestive and Kidney Diseases, the National Cancer Institut, and the Clinical Center, National Institutes of Health, Bethesda, Maryland 20892-1372, USA.
Abstract
BACKGROUND:
Vitamin C at high concentrations is toxic to cancer cells in vitro. Early clinical studies of vitamin C in patients with terminal cancer suggested clinical benefit, but 2 double-blind, placebo-controlled trials showed none. However, these studies used different routes of administration.
OBJECTIVE:
To determine whether plasma vitamin C concentrations vary substantially with the route of administration.
DESIGN:
Dose concentration studies and pharmacokinetic modeling.
SETTING:
Academic medical center.
PARTICIPANTS:
17 healthy hospitalized volunteers.
MEASUREMENTS:
Vitamin C plasma and urine concentrations were measured after administration of oral and intravenous doses at a dose range of 0.015 to 1.25 g, and plasma concentrations were calculated for a dose range of 1 to 100 g.
RESULTS:
Peak plasma vitamin C concentrations were higher after administration of intravenous doses than after administration of oral doses (P < 0.001), and the difference increased according to dose. Vitamin C at a dose of 1.25 g administered orally produced mean (+/-sd) peak plasma concentrations of 134.8 +/- 20.6 micromol/L compared with 885 +/- 201.2 micromol/L for intravenous administration. For the maximum tolerated oral dose of 3 g every 4 hours, pharmacokinetic modeling predicted peak plasma vitamin C concentrations of 220 micromol/L and 13 400 micromol/L for a 50-g intravenous dose. Peak predicted urine concentrations of vitamin C from intravenous administration were 140-fold higher than those from maximum oral doses.
LIMITATIONS:
Patient data are not available to confirm pharmacokinetic modeling at high doses and in patients with cancer.
CONCLUSIONS:
Oral vitamin C produces plasma concentrations that are tightly controlled. Only intravenous administration of vitamin C produces high plasma and urine concentrations that might have antitumor activity. Because efficacy of vitamin C treatment cannot be judged from clinical trials that use only oral dosing, the role of vitamin C in cancer treatment should be reevaluated.
This study?
I guess it wouldn't matter much anyway, high dosages yield low half-lives and those doses being spaced out (i.e. 500mg-1000mg at any one time) doesn't appear damaging. But I don't know much else about Vit C lol
Coop said it was placebo, at least my vit c as hangover cure haha
This is what I'm talking about ched. These are all posts from this thread.You shouldn't be megadosing any antioxidant, that's a rule that applies to vitamin C too.
I am all for helping out where I can, but when you say you've read this thread multiple times, I don't know whether to believe you or not.