Amoxicillin is a penicillin antibiotic used to treat ear, nose, throat, and urinary tract infections, as well as prevent anthrax infection. It can cause upset stomach, diarrhea, vomiting, and hives. Flonase is a nasal spray used to treat allergic and non-allergic rhinitis that reduces nasal swelling and symptoms like sneezing. Side effects include headaches and nosebleeds. Mucomyst treats abnormal mucus secretions from conditions like pneumonia and bronchitis by dilution and inhalation from a glass vial. It can cause nausea, fever, and rashes.