Find & Manage Your Patient Assistance Programs
Estimated patient savings $600,000,000.00
Cinoxacin oral

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.





This medication is an antibiotic used to treat urinary tract infections.

How To Use

Take each dose with a full glass of water. If stomach upset occurs, it may be taken with food or milk. Drink plenty of fluids while taking this medication. Take this medication 2 hours before or 2 hours after taking any medications containing aluminum or magnesium. Some examples include quinapril, didanosine, vitamins/minerals, and antacids. Sucralfate, bismuth subsalicylate, iron, and zinc are also included. These medications bind with cinoxacin preventing its full absorption. Antibiotics work best when the amount of medicine in your body is kept at a constant level. Do this by taking the medication at evenly spaced intervals throughout the day and night. Continue to take this medication until the full prescribed amount is finished even if symptoms disappear after a few days. Stopping the medication too early may allow bacteria to continue to grow resulting in a relapse of the infection.

Side Effects

This medication may cause stomach upset, loss of appetite, diarrhea, nausea, headache or dizziness during the first few days as your body adjusts to the medication. If these symptoms persist or become severe, inform your doctor. Notify your doctor if you develop: vision changes, restlessness, ringing in the ears, seizures, mental or mood changes. Tell your doctor immediately if any of these unlikely but serious side effects occur: joint/muscle/tendon pain or swelling. An allergic reaction to this drug is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include: rash, itching, swelling, severe dizziness, trouble breathing. If you notice other effects not listed above, contact your doctor or pharmacist.


Tell your doctor if you have: kidney disease, liver disease, seizure disorder, drug allergies. This drug may make you dizzy or lightheaded; use caution engaging in activities requiring alertness such as driving or using machinery. Limit alcoholic beverages. This medication may make you more sensitive to the sun. Avoid prolonged sun exposure, tanning booths, or sunlamps. Use a sunscreen and wear protective clothing when outdoors. This drug should be used only if clearly needed during pregnancy. It is not known if this medication is found in breast milk; consult your doctor before breast-feeding.

Drug Interactions

Tell your doctor of any over-the-counter or prescription medication you may take, including: theophylline, didanosine, sucralfate, bismuth subsalicylate, vitamins/minerals (e.g., aluminum, magnesium, iron, zinc), antacids, probenecid. Avoid drinking large amounts of beverages containing caffeine(coffee, tea, colas) or eating large amounts of chocolate. This drug may increase and/or prolong the effects of caffeine. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include loss of appetite, nausea, vomiting, diarrhea, stomach pain, headache, and dizziness.


It is recommended to drink plenty of fluids while taking this medication unless your doctor directs you otherwise. This medication has been prescribed for your current condition only. Do not use it later for another infection or give it to someone else. A different medication may be needed in those cases.

Missed Dose

If you miss a dose, take it as soon as remembered. However, if it is almost time for the next dose and your dosing schedule is 2 per day, space the missed dose and the next dose 5-6 hours apart. If dosing is 3 or more per day, space missed dose and next dose 2-4 hours apart. In any case resume your usual dosing schedule.


Store at room temperature between 59 and 86 degrees F (between 15 and 30 degrees C) away from moisture and sunlight. Do not store in the bathroom.