what is an nitrofurantoin (macrocrystal-monohydrate)
Nitrofurantoin Macrocrystals Description. Nitrofurantoin is an antibacterial agent specific for urinary tract infections. Nitrofurantoin capsule, USP is a hard gelatin capsule shell containing the equivalent of 100 mg of nitrofurantoin in the form of 25 mg of Nitrofurantoin Macrocrystals, USP and 75 mg of nitrofurantoin monohydrate, USP.