The longer half-lived iodine-125 is also occasionally used when a longer half-life radioiodine is needed for diagnosis, and in brachytherapy treatment (isotope confined in small seed-like metal capsules), where the low-energy gamma radiation without a beta component, makes iodine-125 useful.
Split and merge into it. Answered by The Community. Making the world better, one answer at a time. Macrodantin is all macrocrystalline nitrofurantoin while Macrobid is a combination of the macrocrystalline nitrofurantoin as well as the nitrofurantoin monohydrate form (25% and 75% respectively).
6 Reviews. 6 Reviews. Macrobid is the brand name for nitrofurantoin, an antibiotic used to treat or prevent urinary tract infections. Macrobid works by killing the bacteria that cause the infection or by preventing the bacteria from growing.acrobid is the brand name for nitrofurantoin, an antibiotic used to treat or prevent urinary tract infections.