Learn more about usage, cautions, and possible side effects .
Chemical Name: NITROFURANTOIN (NYE-troe-fure-AN-toin)
Macrobid 100mg is an antibiotic used for treating and preventing urinary tract infections caused by certain bacteria.
Some medicines or medical conditions may interact with Macrobid 100mg. INFORM YOUR DOCTOR OR PHARMACIST of all prescription and over-the-counter medicine that you are taking. ADDITIONAL MONITORING OF YOUR DOSE OR CONDITION may be needed if you are taking probenecid or sulfinpyrazone. DO NOT START OR STOP any medicine without doctor or pharmacist approval. Inform your doctor of any other medical conditions, including anemia, diabetes, electrolyte problems, glucose-6-phosphate dehydrogenase (G6PD) deficiency, kidney problems, liver problems, nerve problems (eg, peripheral neuropathy), porphyria (a certain blood problem), low levels of vitamin B in your blood, allergies, pregnancy, or breast-feeding. Tell your doctor if you have a history of lung problems (eg, diffuse interstitial pneumonitis, pulmonary fibrosis) or if you have very poor health. USE OF MACROBID 100mg IS NOT RECOMMENDED if you are pregnant and at term (38 to 42 weeks pregnant), you are about to go into labor, or you are in labor; if you have decreased kidney function, decreased urination, or you are unable to urinate; or if you have a history of liver problems or yellowing of the skin or eyes after taking any form of Macrobid 100mg. Macrobid 100mg should not be used in CHILDREN younger than 1 month old; the risk of anemia may be greater in these children. Contact your doctor or pharmacist if you have any questions or concerns about using Macrobid 100mg.
Follow the directions for taking Macrobid 100mg provided by your doctor. TAKE MACROBID 100mg by mouth with food. DRINKING EXTRA FLUIDS while you are taking Macrobid 100mg is recommended. Check with your doctor for instructions. DO NOT TAKE AN ANTACID THAT HAS MAGNESIUM TRISILICATE in it while you are taking Macrobid 100mg. Check with your pharmacist if you are unsure which antacids have magnesium trisilicate in them. STORE MACROBID 100mg at room temperature, between 59 and 86 degrees F (15 and 30 degrees C), away from heat, moisture, and light. Do not store in the bathroom. TO CLEAR UP YOUR INFECTION COMPLETELY, take Macrobid 100mg for the full course of treatment. Keep taking it even if you feel better in a few days. 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 your infection harder to treat in the future. IF YOU MISS A DOSE of Macrobid 100mg, 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.
DO NOT USE MACROBID 100mg IF you are allergic to any ingredient in Macrobid 100mg. LAB TESTS may be performed while you use Macrobid 100mg. These tests may be used to monitor your condition or check for side effects. Be sure to keep all doctor and lab appointments. MACROBID 100mg MAY CAUSE DROWSINESS OR DIZZINESS. These effects may be worse if you take it with alcohol or certain medicines. Use Macrobid 100mg with caution. Do not drive or perform other possibly unsafe tasks until you know how you react to it. MACROBID 100mg MAY RARELY CAUSE SEVERE AND SOMETIMES FATAL LUNG PROBLEMS. If this occurs, it is usually in patients who take Macrobid 100mg for 6 months or longer. These problems may occur without warning signs. If you will be using Macrobid 100mg 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. MACROBID 100mg 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. MACROBID 100mg 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 MACROBID 100mg may cause a second infection. Tell your doctor if signs of a second infection occur. MACROBID 100mg MAY DISCOLOR THE URINE. This is normal and not a cause for concern. BEFORE YOU BEGIN TAKING ANY NEW MEDICINES, either prescription or over-the-counter, check with your doctor or pharmacist. Use Macrobid 100mg with caution in the ELDERLY; they may be more sensitive to its effects. FOR WOMEN: IF YOU BECOME PREGNANT, contact your doctor. You will need to discuss the benefits and risks of using Macrobid 100mg while you are pregnant. DO NOT TAKE MACROBID 100mg IF you are at term (38 to 42 weeks pregnant), if you are about to go into labor, or if you are in labor. MACROBID 100mg IS FOUND in breast milk. DO NOT BREAST-FEED infants younger than 1 month old while you are taking Macrobid 100mg. If your child is older than 1 month, check with your doctor before breastfeeding to discuss the risks to your baby. DIABETES PATIENTS: Macrobid 100mg 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.
SIDE EFFECTS that may occur while taking Macrobid 100mg include gas; headache; loss of appetite; mild diarrhea; or nausea. If they continue or are bothersome, check with your doctor. CONTACT YOUR DOCTOR IMMEDIATELY if you experience 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 skin or eyes, 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 fingers and toes; unusual bruising or bleeding; or unusual tiredness or weakness. AN ALLERGIC REACTION to Macrobid 100mg is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include rash; hives; itching; difficulty breathing; tightness in the chest; swelling of the mouth, face, lips, or tongue; unusual hoarseness. 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. Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088.
Drug interactions can result in unwanted side effects or prevent a medicine from doing its job. Use our drug interaction checker to find out if your medicines interact with each other. Check drug interactions
If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include vomiting.
DO NOT SHARE MACROBID 100mg with others for whom it was not prescribed. DO NOT USE MACROBID 100mg for other health conditions. KEEP MACROBID 100mg out of the reach of children and pets. IF USING MACROBID 100mg FOR AN EXTENDED PERIOD OF TIME, obtain refills before your supply runs out.
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