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.
, 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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