Can i take vitamin c while taking amoxicillin? i'd like to take about 5000 mg. also, it's okay to take b-complex and iron while taking amoxicillin?

Yes, yes, yes, also: It is totally fine to take amoxicillin, b-complex and iron while taking amoxicillin. I also strongly advise anyone taking Amoxicillin or any other antibiotics to take a good quality probiotic such as culturelle, jarro-dophilu or dr. Ohira's as well as sacchromyces boulardii in products like florastar, both during ; after to prevent anti-biotic associated diarrhea and replenish your friendly flora.