I've learned a lot about vitamin C in my chemistry class. It's absolutely fascinating. It used to prevent pirates from getting scurvy, by eating lemons.
Ohh yeah, I love citrus too so I'm a fan.
Many people take very large doses of vitamin C to prevent things like a cold but the  United States Institute of Medicine recommends against it.
Oh like those powder supplements?
Yeah, just like those High C supplement powders. The daily recommended amount is about 90 mg/day but some of those supplements are closer to 2000mg/day.
I would
Evidence does not support taking it prevents colds, but there appears to be some minor evidence that it may slightly shorten the length of a cold. I generally don't worry about it though vitamin C is generally tolerated very well.
I meant to say that I would've thought that the remaining vitamin C would just be urinated out and therefore making it harmless but I guess not.
, however, some evidence that regular use may shorten the length of colds. It is unclear whether supplementation affects the risk of cancer, cardiovascular disease, or dementia. It may be taken by mouth or by injection.
Vitamin C is generally well tolerated. Large doses may cause gastrointestinal discomfort, headache, trouble sleeping, and flushing of the skin. Normal doses are safe during pregnancy. The United States Institute of Medicine recommends against taking large doses.
Vitamin C was discovered in 1912, isolated in 1928, and
The vitamin C (specifically acid) in citrus fruits prevented scurvy , and helped to make these sailors some of the healthiest of the time. At that time "lemon" and "lime" were used interchangeably to refer to citrus fruits. Initially, lemon juice (from lemons imported from Europe) was used as the additive to grog on the Royal Navy ships, but was later switched to limes (grown in British colonies), not realizing that limes did not contain sufficient Vitamin C to prevent the disease. 
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