increase amount of vitamin C to at minimum 10 grams/day spread out over the day. stick with recommended amounts for everything else.

continue to increase vitamin C by another gram each day so 11 day 2 and 12 day 3 etc. If diahrea occurs back off dosage by a gram and stick at that level. you cannot hurt yourself from too much vitamin C - excess will just pass in diahrea.

Edit: he should start to see some relief within hours of taking his first big dose

increase amount of vitamin C to at minimum 10 grams/day spread out over the day. stick with recommended amounts for everything else.

continue to increase vitamin C by another gram each day so 11 day 2 and 12 day 3 etc. If diahrea occurs back off dosage by a gram and stick at that level. you cannot hurt yourself from too much vitamin C - excess will just pass in diahrea.