Furabid is used for treating and preventing urinary tract infections caused by certain bacteria. Furabid is an antibiotic for specific use in the urinary tract. It works by killing sensitive bacteria.
Use Furabid as directed by your doctor.
- Take Furabid by mouth with food.
- Do not take an antacid that has magnesium trisilicate in it while you are taking Furabid. Check with your pharmacist if you are unsure which antacids have magnesium trisilicate in them.
- Drinking extra fluids while you are taking Furabid is recommended.
- To clear up your infection completely, take Furabid for the full course of treatment. Keep taking it even if you feel better in a few days.
- If you miss a dose of Furabid, take it as soon as possible. If it is almost time for your next dose, skip the missed dose and go back to your regular dosing schedule. Do not take 2 doses at once.
Ask your health care provider any questions you may have about how to use Furabid.
Store Furabid at room temperature, between 59 and 86 degrees F (15 and 30 degrees C). Store away from heat, moisture, and light. Do not store in the bathroom. Keep Furabid out of the reach of children and away from pets.
Do NOT use Furabid if:
- you are allergic to any ingredient in Furabid
- you are pregnant and at term (38 to 42 weeks pregnant), you are about to go into labor, or you are in labor
- you have decreased kidney function, decreased urination, or you are unable to urinate
- you have a history of liver problems or yellowing of the skin or eyes after taking any form of Furabid
- the patient is younger than 1 month old.
Contact your doctor or health care provider right away if any of these apply to you.
Some medical conditions may interact with Furabid. Tell your doctor or pharmacist if you have any medical conditions, especially if any of the following apply to you:
- if you are pregnant, planning to become pregnant, or are breast-feeding
- if you are taking any prescription or nonprescription medicine, herbal preparation, or dietary supplement
- if you have allergies to medicines, foods, or other substances
- if you have anemia, diabetes, electrolyte problems, glucose-6-phosphate dehydrogenase (G6PD) deficiency, kidney problems, liver problems, nerve problems (eg, peripheral neuropathy), porphyria (a certain blood problem), or low levels of vitamin B in your blood
- if you have a history of lung problems (eg, diffuse interstitial pneumonitis, pulmonary fibrosis)
- if you have very poor health.
Some medicines may interact with Furabid. Tell your health care provider if you are taking any other medicines, especially any of the following:
- Probenecid or sulfinpyrazone because they may increase the risk of Furabid's side effects or decrease Furabid's effectiveness.
This may not be a complete list of all interactions that may occur. Ask your health care provider if Furabid may interact with other medicines that you take. Check with your health care provider before you start, stop, or change the dose of any medicine.
Important Furabid Safety Information
- Furabid may cause drowsiness or dizziness. These effects may be worse if you take it with alcohol or certain medicines. Use Furabid with caution. Do not drive or perform other possible unsafe tasks until you know how you react to it.
- Furabid may rarely cause severe and sometimes fatal lung problems. If this occurs, it is usually in patients who take Furabid for 6 months or longer. These problems may occur without warning signs. If you will be using Furabid for a long period of time, your doctor may perform lung function tests to check for side effects. Tell your doctor right away if you develop fever, chills, chest pain, unusual cough, trouble breathing (especially while you are being active), other breathing problems, or persistent feeling of being unwell.
- Furabid may rarely cause severe and sometimes fatal liver problems. Tell your doctor right away if you develop yellowing of the skin or eyes; pale stools; or severe or persistent nausea, loss of appetite, or stomach pain.
- Furabid may rarely cause severe and sometimes fatal nerve problems. The risk may be greater in patients who have decreased kidney function, anemia, diabetes, electrolyte problems, or low blood vitamin B levels. Tell your doctor right away if you develop numbness, burning, or tingling in the hands or feet.
- 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.
- Long-term or repeated use of Furabid 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.
- Furabid only works against bacteria; it does not treat viral infections (eg, the common cold).
- Be sure to use Furabid 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.
- Furabid may discolor the urine. This is normal and not a cause for concern.
- Diabetes patients - Furabid may cause the results of some tests for urine glucose to be wrong. Ask your doctor before you change your diet or the dose of your diabetes medicine.
- Lab tests, including liver function, kidney function, and lung function, may be performed while you use Furabid. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments.
- Use Furabid with caution in the elderly; they may be more sensitive to its effects, especially lung or liver problems.
- Furabid should not be used in children younger 1 month; the risk of anemia may be greater in these children.
- Pregnancy and breast-feeding: If you become pregnant, contact your doctor. You will need to discuss the benefits and risks of using Furabid while you are pregnant. Do NOT take Furabid if you are at term (38 to 42 weeks pregnant), if you are about to go into labor, or if you are in labor. Furabid is found in breast milk. Do not breast-feed infants younger 1 month while you are taking Furabid. If your child is older than 1 month, check with your doctor. Discuss any possible risks to your baby.
All medicines may cause side effects, but many people have no, or minor, side effects.
Check with your doctor if any of these most common side effects persist or become bothersome:
Gas; headache; loss of appetite; mild diarrhea; nausea.
Seek medical attention right away if any of these severe side effects occur:
Severe allergic reactions (rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness); bloody or watery stools; bluish skin or nails; blurred vision or other vision changes; butterfly-shaped rash on the nose and cheeks; confusion; joint or muscle pain; mood or mental changes (eg, depression); persistent feeling of being unwell; persistent headache; red, swollen, blistered, or peeling skin; severe or persistent diarrhea; severe stomach pain or cramps; symptoms of liver problems (eg, yellowing of the eyes or skin, pale stools, severe or persistent nausea or loss of appetite, stomach pain); symptoms of lung problems (eg, fever, chills, chest pain, shortness of breath, unusual or persistent cough); tingling, numbness, or burning of the hands or feet; unusual bruising or bleeding; unusual tiredness or weakness.
This is not a complete list of all side effects that may occur. If you have questions about side effects, contact your health care provider.