I have been taking ascorbic acid (vitamin c) for about 5 months now, because i heard that its good for my metabolism.. i was just wondering if i may have done any damage to my body. i took about 500mg a day... and if it could have done anything to me?

Vitamin C : Acidification of the urine by ascorbic acid may cause precipitation of cysteine, urate or oxalate kidney stones. Commonly I find patients have stomach irritation from vitamin C. Ester C is a non-acidic form of vitamin C

No damage expected: From high school age through adulthood, the recommended daily intake of vitamin C is about 75-100 mg each day, which a person can get from eating a couple of oranges. Many people take vitamin C supplements, at about 250-500 mg each day, and have to side effects at that dosage. If wanting to take more than that, one can talk with his doctor to see why such supplementation is needed or not needed.