NALIDIXIC ACID is an antibacterial. It works by killing sensitive bacteria in the urinary tract by stopping the production of essential proteins needed by the bacteria to survive.

They need to know if you have any of these conditions:

• an unusual or allergic reaction to nalidixic acid, other medicines, foods, dyes, or preservatives
• blood disease porphyria or a history of convulsions
• cancer chemotherapy
• central nervous system disease
• kidney or liver problems
• pregnant or trying to get pregnant
• breast-feeding

Take it with or without food. If stomach upset occurs, take with food to reduce stomach irritation. Do not take products containing magnesium, aluminum, calcium, sucralfate, iron, or zinc preparations within 2 to 3 hours of taking the medicine . These products bind with the medicine preventing its absorption.

Drink a full glass of water with each dose. Drink several additional glasses of water daily unless otherwise directed by your doctor. Do not drink products with caffeine.

To clear up your infection completely, take the medicine for the full course of treatment. Keep taking it even if you feel better in a few days.

Talk to your pediatrician regarding the use of this medicine in children. This medicine is not approved for use in children.

Overdosage: If you think you have taken too much of this medicine contact a poison control center or emergency room at once.

NOTE: This medicine is only for you. Do not share this medicine with others.

If you miss a dose, take it as soon as you can. If it is almost time for your next dose, take only that dose. Do not take double or extra doses.

• anticoagulants
• antiarrhythmics
• cyclosporine
• melphalan
• theophyllin
• probenecid

Tell your prescriber or health care professional about all other medicines you are taking, including non-prescription medicines, nutritional supplements, or herbal products. Also tell your prescriber or health care professional if you are a frequent user of drinks with caffeine or alcohol, if you smoke, or if you use illegal drugs. These may affect the way your medicine works. Check with your health care professional before stopping or starting any of your medicines.

This medicine can cause drowsiness, dizziness, or blurred vision. These effects may be worse if you take it with alcohol or certain medicines. Use it with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it.

This medicine may cause you to become sunburned more easily. Avoid the sun, sunlamps, or tanning booths until you know how you react to Neggram . Use a sunscreen or wear protective clothing if you must be outside for more than a short time.

Mild diarrhea is common with antibiotic use. However, a more serious form of diarrhea (pseudomembranous colitis) may rarely occur. This may develop while you use the antibiotic or within several months after you stop using it. Contact your doctor right away if stomach pain or cramps, severe diarrhea, or bloody stools occur. Do not treat diarrhea without first checking with your doctor.

Be sure to use it for the full course of treatment. If you do not, the medicine may not clear up your infection completely. The bacteria could also become less sensitive to this or other medicines. This could make the infection harder to treat in the future.

Long-term or repeated use of this medicine may cause a second infection. Tell your doctor if signs of a second infection occur. Your medicine may need to be changed to treat this.

Lab tests, including liver function, kidney function, and complete blood cell counts, may be performed while you use this medicine. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.

Side effects that you should report to your doctor or health care professional as soon as possible:

• blurred or decreased vision
• burning or tingling sensation
• changes in color vision
• convulsions
• decrease in ability to sense pain, temperature or body position
• double vision
• pain, redness or swelling of a tendon
• seeing halos around lights

Side effects that usually do not require medical attention (report to your doctor or health care professional if they continue or are bothersome):

• diarrhea
• dizziness
• drowsiness
• headache
• nausea
• rash
• stomach pain or discomfort
• vomiting

This list may not describe all possible side effects.

Keep out of the reach of children in a container that small children cannot open.

Store at room temperature, below 77 degrees F (25 degrees C), in a tightly closed container. Store away from heat, moisture, and light. Do not store in the bathroom.