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sulfisoxazole

Pronunciation: sul fi SOX a zole

What is the most important information I should know about sulfisoxazole?

finish Take this medication for the full prescribed length of time. Your symptoms may get better before the infection is completely cleared. Sulfisoxazole will not treat a viral infection such as the common cold or flu.
donot Do not share this medication with another person, even if they have the same symptoms you have.

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, stop taking sulfisoxazole and call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.

What is sulfisoxazole?

Sulfisoxazole is a sulfonamide ("sulfa") antibiotic that helps keep bacteria from growing in your body.

Sulfisoxazole is used to treat or prevent many different types of infections caused by bacteria, such as bladder infections, ear infections, or meningitis.

Sulfisoxazole may also be used for purposes not listed in this medication guide.

What should I discuss with my health care provider before taking sulfisoxazole?

donot You should not use this medication if you are allergic to sulfisoxazole or to any other sulfa drugs such as Azulfidine, Bactrim, Cotrim, Septra, or Sulfazine. Women who are in late pregnancy or are breast-feeding should not take sulfisoxazole.

To make sure you can safely take sulfisoxazole, tell your doctor if you have any of these other conditions:

  • asthma;
  • diabetes;
  • liver disease;
  • kidney disease;
  • anemia (a lack of red blood cells);
  • an enzyme deficiency called G6PD (glucose-6-phosphate dehydrogenase) deficiency;
  • a history of any type of allergy; or
  • if you are unable to urinate.
nopreg FDA pregnancy category C. It is not known whether sulfisoxazole will harm an unborn baby. Sulfisoxazole can cause jaundice (yellowing of the skin or eyes) and other problems in a newborn if the mother has taken this medication late in pregnancy. Tell your doctor if you are pregnant or plan to become pregnant while using this medication.
nobrfeed Sulfisoxazole can pass into breast milk and may harm a nursing baby. You should not breast-feed while you are taking sulfisoxazole, especially if your baby is younger than 2 months old.
nochild Do not give this medicine to a child younger than 2 months old without the advice of a doctor.

How should I take sulfisoxazole?

Take exactly as prescribed by your doctor. Do not take in larger or smaller amounts or for longer than recommended. Follow the directions on your prescription label.

You may take sulfisoxazole with or without food.

shake Shake the oral suspension (liquid) well just before you measure a dose. Measure the liquid with a special dose-measuring spoon or medicine cup, not with a regular table spoon. If you do not have a dose-measuring device, ask your pharmacist for one.
water While you are taking sulfisoxazole, drink 6 to 8 glasses of water each day. This will help prevent kidney stones or crystals in the urine.

To be sure this medication is helping your condition, your blood may need to be tested often. Visit your doctor regularly.

emt If you need surgery, tell the surgeon ahead of time that you are using sulfisoxazole. You may need to stop using the medicine for a short time.
finish Take this medication for the full prescribed length of time. Your symptoms may improve before the infection is completely cleared. Sulfisoxazole will not treat a viral infection such as the common cold or flu.
donot Do not share this medication with another person, even if they have the same symptoms you have.
rt Store at room temperature away from moisture and heat.

What happens if I miss a dose?

Take the missed dose as soon as you remember. Skip the missed dose if it is almost time for your next scheduled dose. Do not take extra medicine to make up the missed dose.

What happens if I overdose?

emt Seek emergency medical attention or call the Poison Help line at 1-800-222-1222.

Overdose symptoms may include headache, drowsiness, nausea, vomiting, stomach pain, loss of appetite, fever, blood in your urine, pale skin, easy bruising or bleeding, flu symptoms, feeling light-headed, or fainting.

What should I avoid while taking sulfisoxazole?

Antibiotic medicines can cause diarrhea, which may be a sign of a new infection. If you have diarrhea that is watery or bloody, stop taking sulfisoxazole and call your doctor. Do not use anti-diarrhea medicine unless your doctor tells you to.

dizzy Sulfisoxazole may impair your thinking or reactions. Be careful if you drive or do anything that requires you to be alert.
nosun Avoid exposure to sunlight or tanning beds. Sulfisoxazole can make you sunburn more easily. Wear protective clothing and use sunscreen (SPF 30 or higher) when you are outdoors.

What are the possible side effects of sulfisoxazole?

emt Get emergency medical help if you have any of these signs of an allergic reaction: hives; difficulty breathing; swelling of your face, lips, tongue, or throat.
donot Call your doctor at once if you have a serious side effect such as:
  • diarrhea that is watery or bloody;
  • fever, chills, body aches, flu symptoms;
  • cough, feeling short of breath, pale skin, joint pain, unusual bruising;
  • fast or pounding heartbeat;
  • blue lips or fingernails, feeling light-headed, fainting;
  • swelling around your neck or throat;
  • urinating more or less than usual;
  • severe pain in your side or lower back, blood in your urine;
  • nausea, stomach pain, low fever, loss of appetite, dark urine, clay-colored stools, jaundice (yellowing of the skin or eyes);
  • fever, sore throat, and headache with a severe blistering, peeling, and red skin rash;
  • agitation, confusion, unusual thoughts or behavior; or
  • seizure (black-out or convulsions).

Less serious side effects may include:

  • mild stomach pain, bloating, gas;
  • headache, dizziness;
  • ringing in your ears; or
  • swollen, black, or "hairy" tongue.

This is not a complete list of side effects and others may occur. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.

What other drugs will affect sulfisoxazole?

Tell your doctor about all other medicines you use, especially:

  • a blood thinner such as warfarin (Coumadin);
  • methotrexate (Rheumatrex, Trexall); or
  • diabetes medications such as acetohexamide (Dymelor), chlorpropamide (Diabinese), glimepiride (Amaryl, Avandaryl, Duetact), glipizide (Glucotrol), glyburide (DiaBeta, Glynase PresTab, Micronase), tolazamide (Tolinase), or tolbutamide (Orinase).

This list is not complete and other drugs may interact with sulfisoxazole. Tell your doctor about all medications you use. This includes prescription, over-the-counter, vitamin, and herbal products. Do not start a new medication without telling your doctor.

Where can I get more information?

Your pharmacist can provide more information about sulfisoxazole.

Remember, keep this and all other medicines out of the reach of children, never share your medicines with others, and use this medication only for the indication prescribed.

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