Vitamin C is not stored in the body (excess amounts are excreted), so overdose is not a concern. But it's still important not to exceed the safe upper limit of 2,000 milligrams a day to avoid stomach upset and diarrhea. Water-soluble vitamins must be continuously supplied in the diet to maintain healthy levels.
For adults, the recommended daily amount for vitamin C is 65 to 90 milligrams (mg) a day, and the upper limit is 2,000 mg a day. Although too much dietary vitamin C is unlikely to be harmful, megadoses of vitamin C supplements might cause: Diarrhea; Nausea; Vomiting; Heartburn; Abdominal cramps; Headache; Insomnia
Oct 28, 2017· All the adverse effects of vitamin C, including digestive distress and kidney stones, appear to occur when people take it in mega doses greater than 2,000 mg . If you choose to take a vitamin C .
Clinical studies suggest that the amount of vitamin C required for optimal health is at least 400 mg/day, with some studies suggesting doses as high as several thousand milligrams daily. 46 Many health practitioners recommend supplementing with at least 1,000 mg of vitamin C daily.
Recommended Doses and Timing For Vitamin C. The recommended daily intake of vitamin C for adults is 75 mg for women and 90 mg for men, person who smokes and those indulged in rigorous training requires higher amount of vitamin C because of increased production of free radical. Doses of 200 mg vitamin C taken two times in a day have been found effective in reducing damage caused by free …
Because it's a water-soluble vitamin (meaning your body eliminates excess amounts in your urine), overdosing is highly unlikely, but not impossible–the upper limit is 2,000 mg a day; if you exceed that without physician supervision, the side effects of vitamin C overdose may include upset stomach, nausea, diarrhea, vomiting, cramping .
Daily intake of vitamin C equal to 1000 mg per day seems beneficial overall, at least based on the research to date. You could even make the case that 2,000 mg per day (which is the Tolerable Upper Intake Level) also might be better for you than just a couple hundred mg.