Hello, I'm a 24 year male I weigh 167 lbs. And have an amox / sulfa allergy. I recently lost my health insurance and have come down with a pretty bad upper respiratory infection. It started in my sinus and has recently settled in my lungs. I've been having severe discomfort as well and coughing and nasal drainage. Long story short I can't afford to go to the doctor let alone get a script. My aunt has my uncles recent script for ciprofloxin hcl 500. I was wondering if this was appropriate for this sort of thing and if so would it affect my sulfa allergy and if not what would the proper dose be. thank you very much in advance.