Wiktionary(0.00 / 0 votes)Rate these synonyms: 1  filter(noun) Synonyms: 2  filter(noun) To sort, sift, or isolate. 3  filter(noun) To diffuse; to cause to be less concentrated or focused. 4  filter(noun) To pass through a filter or to act as though passing through a filter. 5  filter(noun) To move slowly or gradually; to come or go a few at a time.
Macrobid (nitrofurantoin monohydrate/macrocrystals) Capsules. 1  To reduce the development of drug-resistant bacteria and maintain the effectiveness of Macrobid and other antibacterial drugs, Macrobid should be used only to treat or prevent infections that are proven or strongly suspected to be caused by bacteria.
GENERIC NAME: NITROFURANTOIN/NITROFURANTOIN MACROCRYSTALS - ORAL (NYE-trow-fyour-AN-toe-in) BRAND NAME(S): Macrobid. USES: This medication is an antibiotic used to treat bladder infections (acute cystitis). It works by stopping the growth of bacteria.This antibiotic treats only bacterial infections. It will not work for viral infections (e.g., common cold, flu).