Antibiotics treat bacterial infections. They don’t work for colds, flu, or most sore throats caused by viruses. Using antibiotics the wrong way can make them stop working for you later. This page gives straight-up facts you can use today—how antibiotics work, common types, simple safety rules, and tips for buying safely online.
Antibiotics either kill bacteria or stop them from growing. Doctors choose a specific drug based on the infection type and sometimes a lab test (culture and sensitivity). Common groups you’ll hear about:
- Penicillins: amoxicillin, ampicillin. Often first choice for ear, throat, and some skin infections.
- Cephalosporins: cefalexin, cefuroxime. Used when penicillins aren’t suitable or for certain more serious infections.
- Macrolides: azithromycin, clarithromycin. Good for some respiratory infections and for people allergic to penicillin.
- Tetracyclines: doxycycline. Used for acne, some respiratory infections, and tick-borne illnesses.
- Fluoroquinolones: ciprofloxacin, levofloxacin. Effective but carry higher risk of side effects, so doctors avoid them for minor infections when possible.
Follow these practical rules every time you face an infection.
- Get a proper diagnosis. Ask your doctor if the infection is bacterial and whether a culture is needed. Treating without knowing can cause harm.
- Follow the prescription exactly. Take the right dose at the right times. Finish the course unless your doctor says stop—stopping early can leave some bacteria alive and resistant.
- Watch for side effects. Common ones include upset stomach, yeast infections, or rashes. A sudden swelling, trouble breathing, or severe rash means seek emergency care—these can be allergies.
- Mind interactions. Antibiotics can interact with other meds, antacids, and supplements. Tell your provider about everything you take, including herbal remedies.
- Avoid sharing or saving antibiotics. Leftover pills may be the wrong drug or dose for a new illness.
- Buying online? Use only licensed pharmacies that require a prescription, show a physical address, and have clear contact details. Very low prices or no prescription requirement are red flags. Check reviews and pharmacy verification tools if available.
- Store properly. Most antibiotics keep at room temperature away from moisture. Some need refrigeration—check the label.
Antibiotics are powerful tools when used correctly. Ask clear questions: Why this drug? How long? Any side effects to watch for? If something feels off while taking them, contact your doctor. Smart use today keeps antibiotics working for you tomorrow.
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