For low fruit and vegetable intake or recovery periods. Excess is simply excreted.
TrustedSupp Tier System™ · Tier 2Take until levels correct
Check before you startThis one has documented interactions with medication classes where the consequences are serious. If you take any prescription medicine, run it past a pharmacist before starting.
Evidence strength
65/100Moderate
WEAKLIMITEDMODERATESTRONGVERY STRONG
What the evidence supports: correcting deficiency; cold prevention evidence is weak, duration slightly better.
This scores how well-supported the claim above is — not how much benefit you personally would get. A high score on a narrow claim does not extend to everything the product is marketed for.
How long to take it
Short courses. Long-term megadosing has no demonstrated benefit.
Who it's actually for
Low produce intake, smokers, and recovery from illness or surgery.
Safe upper limit
Reported
2,000 mg per day
Above this, diarrhoea is common and kidney stone risk rises in susceptible people.