 [ Symptoms ] can you develop an allergy at anytime of your life [ Disease ] most throat infections or throat pain is caused by viruses viruses do not respond at all to antibiotics the only way a medical clinician would recommend azithromycin for a throat infection would be for a penicillin allergic person who has lab documented strep and does not have mononucleosis i do not recommend self diagnosis and self treatment using leftover antibiotics or antibiotics there are prescribed for someone else when it comes to managing a throat infection