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).
Macrobid contains two forms of nitrofurantoin. Seventy-five percent of the nitrofurantoin is in the monohydrate form and is mixed with a special powder. In the digestive tract, the powder and the nitrofurantoin monohydrate form a gel that releases the medication slowly over time.acrobid Â® (nitrofurantoin monohydrate/macrocrystalline) is a prescription antibiotic approved to treat urinary tract infections (UTIs).