Macrobid (Nitrofurantoin Macrocrystals) is an antibiotic used in adults to treat several types of bacterial infections, including Urinary Tract Infection (UTIs). It works by preventing bacterial cells from forming properly. It belongs to a class of drugs called nitrofurans. This antibiotic treats only bacterial infections. It will not work for viral infections such as common cold, flu. Using any antibiotic when it is not needed can cause it to not work for future infections. This medication should not be used in infants younger than 1 month old. This drug should not be used to treat infections outside the bladder including kidney infections. Take this medication by mouth with food as directed by your doctor, usually twice daily (every 12 hours). Swallow the medication whole for best results. Drink plenty of fluids during your treatment. For the best effect, take this antibiotic at evenly spaced times. 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, which may result in a return of the infection. Do not take Macrobid if you are in the last 2 to 4 weeks of pregnancy.
Canadian Pharmacy King currently offers Macrobid (Nitrofurantoin Macrocrystals) from Canada and the United Kingdom manufactured by Allergan. The generic Nitrofurantoin Macrocrystals comes from Canada by a different manufacturer. Brand Macrobid and generic Nitrofurantoin Macrocrystals are available in the strength of 100 mg capsules.
The common side effects of Macrobid may include change in urine color, persistent nausea, vomiting, stomach/abdominal pain, yellowing eyes/skin, tiredness, headache, gas, diarrhea, constipation. Contact your doctor right away if you have any of the following symptoms:
• Eye pain;
• Easy bruising/bleeding;
• Fever, chills;
• Liver damage;
• Mental/mood changes;
• New signs of infection;
• Persistent/severe headaches;
• Troubled breathing;
• Vision changes
This is not a complete list of side effects and others may occur. Please call your doctor if you have any further concerns or questions.
Older adults may be at a greater risk for side effects while using this drug, especially nerve, liver or lung problems. This medication may cause live bacterial vaccines (such as typhoid vaccine) to not work as well. Do not have any immunizations/vaccinations while using this medication unless your doctor tells you to. Do not use Macrobid if you are allergic to nitrofurantoin, are urinating less than usual or not at all, are in the last 2 to 4 weeks of pregnancy, have severe kidney disease, have a history of jaundice or liver problems caused by taking nitrofurantoin. Before taking Macrobid, inform your doctor if you: have anemia; any type of debilitating disease, an electrolyte imbalance or vitamin B deficiency, are pregnant or breastfeeding; have diabetes; glucose-6-phosphate dehydrogenase (G6PD) deficiency; or kidney disease, liver disease. Tell your doctor, nurse, or pharmacist about all the medicines you take, including drugs prescribed by other doctors, vitamins, minerals, natural supplements, or alternative medicines. The following may interact with Macrobid: certain drugs to treat gout (uricosuric drugs such as sulfinpyrazone), probenecid, spironolactone, and the typhoid vaccine.
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The generic alternative is not manufactured by the company that makes the brand product.
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