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.
macrobid is the brand name for nitrofurantoin an antibiotic used to treat or prevent urinary tract infectionsmacrobid works by killing the bacteria that cause the infection or by preventing the bacteria from growingf you have any of these symptoms while taking macrobid check with your doctor right away some of them could indicate liver problems stomach pain tenderness stools the color of clay or urine that is dark no appetite or lower appetite nausea vomiting yellowing of skin eyes