Ofloxacin — practical guide for patients

Ofloxacin is a fluoroquinolone antibiotic used to treat certain bacterial infections — think urinary tract infections, some respiratory infections, skin infections, and eye infections (as eye drops). It kills bacteria by stopping them from copying their DNA. That makes it powerful, but also a drug you should use carefully.

How to take ofloxacin safely

Always follow your prescriber's directions. Typical oral doses vary by infection: many uncomplicated UTIs use a 5–7 day course, while some lung or skin infections need 7–14 days. Take pills with a full glass of water. Do not skip doses and finish the whole course even if you feel better; stopping early can let bacteria come back and become resistant.

Don't take ofloxacin close to dairy, calcium, iron, magnesium or aluminum-containing products, or sucralfate. These reduce how much medicine your body absorbs. Separate antacids, iron, calcium supplements, and sucralfate by at least 2–4 hours from your ofloxacin dose.

If you have kidney problems, your doctor may lower the dose. Tell your prescriber about all medicines you take — especially blood thinners, certain diabetes drugs, and medicines affecting the heart rhythm.

Common side effects and red flags

Mild effects include nausea, stomach pain, headache, and dizziness. A less common but serious risk is tendon pain or rupture — especially the Achilles tendon. Stop taking ofloxacin and call your doctor right away if you get sudden tendon pain, swelling, or trouble walking.

Other serious issues can include nerve problems (tingling, numbness), changes in mood or sleep, and severe diarrhea (which might mean C. difficile infection). Also watch for signs of allergic reaction: hives, swelling of face or throat, or trouble breathing — seek emergency care if that happens.

A few safety notes: avoid heavy sun exposure while on ofloxacin (it can increase sun sensitivity), and do not use it in many children or pregnant women unless the doctor says it’s necessary. Fluoroquinolones are linked to lasting side effects in rare cases, so doctors reserve them for infections where safer drugs aren’t an option.

Want to buy ofloxacin online? Always use a reputable pharmacy and keep a valid prescription. Buying antibiotics without a prescription or from unknown sources risks getting the wrong drug, wrong dose, or counterfeit medicine.

Questions to ask your doctor: Do I need a dose adjustment for my kidneys? How long should I take it for this infection? Are there safer alternatives for my age or condition? These simple questions help you use ofloxacin more safely and get better results.

Use antibiotics wisely. Ofloxacin works well when used right, but it’s not for every infection. If symptoms worsen or new symptoms appear, contact your healthcare provider without delay.