If you store this medicine at home, keep it at room temperature, away from heat and direct light.
Ask your pharmacist, doctor, or health caregiver about the best way to dispose of any leftover medicine, containers, and other supplies. You will also need to throw away old medicine after the expiration date has passed.
Keep all medicine away from children and never share your medicine with anyone.
Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.
Make sure your doctor knows if you are also using digoxin, dofetilide, erythromycin, probenecid, Lanoxin®, or Tikosyn®. Tell your doctor if you use a blood thinner such as warfarin (Coumadin®), or a diuretic or "water pill" such as furosemide or hydrochlorothiazide. Tell your doctor if you are using a diabetes medicine taken by mouth such as glyburide, Amaryl®, Actos®, Avandia®, Glucotrol®, or Glucophage®.
Tell your doctor if you use medicine for depression or mental illness such as amitriptyline, imipramine, Geodon®, Haldol®, Mellaril®, Prozac®, or Serentil®. Make sure your doctor knows if you are using a pain or arthritis medicine such as aspirin, indomethacin, naproxen, ibuprofen, Advil®, or Relafen®. Tell your doctor if you are using a medicine to treat abnormal heart rhythm such as amiodarone, bretylium, disopyramide, ibutilide, procainamide, quinidine, or sotalol.
There are many other medicines that you should not use together with gatifloxacin. This includes nonprescription (over-the-counter) medicines and herbal products. Make sure your doctor knows about all other medicines you are using.
Make sure your doctor knows if you are pregnant or breastfeeding, or if you have a history of heart disease, stroke, heart rhythm problems, or a family history of a heart condition called Long QT Syndrome. Also make sure your doctor knows if you have diabetes, kidney disease, hypokalemia (low blood potassium), or a seizure disorder (such as epilepsy). This medicine should not be given to children.
If you have severe diarrhea, ask your doctor before taking any medicine to stop the diarrhea.
This medicine may raise or lower your blood sugar, or it may cover up symptoms of very low blood sugar (hypoglycemia).
If your blood sugar gets too low, you may feel weak, drowsy, confused, anxious, or very hungry. You may also sweat, shake, or have blurred vision, a fast heartbeat, or a headache that will not go away.
Call your doctor if you have pain, swelling, or tearing of a tendon. Tendons may be found in the back of your knee or ankle, in your shoulder, elbow, hand, or wrist. You may need to stop taking the medicine.
This medicine may make you dizzy or lightheaded. Avoid driving, using machines, or doing anything else that could be dangerous if you are not alert.
This medicine may make your skin more sensitive to sunlight. Use a sunscreen when you are outdoors. Avoid sunlamps and tanning beds.
If your symptoms do not improve or if they get worse, call your doctor.