Nitrofurantoin (macrocrystals) Images. What does Nitrofurantoin (macrocrystals) look like? Note: Multiple pictures are displayed for those medicines available in different strengths, marketed under different brand names and for medicines manufactured by different pharmaceutical companies. Nitrofurantoin oral capsule is available as both generic and brand-name drugs. Brand-names: Macrobid and Macrodantin. Nitrofurantoin is also available in an oral suspension. Nitrofurantoin may cause live bacterial vaccines. Although most antibiotics are unlikely to affect hormonal birth control such as pills, patch, or ring, a few antibiotics (such as rifampin. Pictures of Macrobid (Nitrofurantoin), drug imprint information, side effects for the patient. Nitrofurantoin can pass into breast milk and may harm a nursing baby. You should not breast-feed while you are taking this medicine. Nitrofurantoin should not be given to a child younger than 1 month old. Question. I have recently been prescribed an antibiotic called nitrofurantoin macro 50mg capsules. I am taking them once a day for a six month period for an inflamed bladder. The Macrobid® brand of nitrofurantoin is a hard gelatin capsule shell containing the equivalent of 100 mg of nitrofurantoin in the form of 25 mg of nitrofurantoin macrocrystals and 75 mg of nitrofurantoin monohydrate. NITROFURANTOIN is an antibiotic. It is used to treat urinary tract infections. The lowest GoodRx price for the most common version of nitrofurantoin is around $15.44, 64% off the average retail price of $42.96. How to use Nitrofurantoin MONO-MACRO. 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. NITROFURANTOIN is an antibiotic. It is used to treat urinary tract infections. The lowest GoodRx price for the most common version of nitrofurantoin mono/macro is around $17.71, 67% off the average retail price of $54.99.