I was wondering i have been taking vitamin c and vitamin d for a year. have i overdosed myself. if so how do i know. are there any symptoms?also i have heard to take calcium supplements with vitamin d. what if i don't is it serious? but i take vitamin c a

Vit c, vit d: You don't say how much you have taken. Vitamin C is hard to overdose on, especially if you are sick or stressed. Side effects would include heartburn, reflux and diarrhea. Vit D however, is fat soluble and therefor, more prone to overdose. I have pts take 2-5000 IUs daily. Overdose Symptoms include increased calcium, kidney problems, weakness, nausea and vomiting.