Zithromax (azithromycin) is a prescription medicine used for the therapy of infections created by the presence of bacteria in the body. Additionally report to your medical company the record of HIV, uneven heartbeat, cystic fibrosis, renal or liver illness prior to requesting for Zithromax prescription. Make certain your physician knows your full case history before prescribing this medication. If you are presently taking dihydroergotamine, anticoagulants, ergotamine, terfenadine, cyclosporine, digoxin, medicines that subdue the invulnerable system, or phenytoin - make sure you inform your healthcare company in advancement, before asking him for a prescription. While some medicines could be securely taken with Zithromax others are most likely to create interactions and make your treatment less reliable, also unsafe.