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.
Nitrofurantoin: Macrobid vs. Macrodantin. Nitrofurantoin is a nitrofuran antibacterial agent used to treat urinary tract infections (UTIs) caused by many gram-negative and some gram-positive bacteria.This medication may be used in certain patients for the prophylaxis of recurrent UTI as well.Nitrofurantoin is available in 2 different formulations:itrofurantoin: Macrobid vs. Macrodantin. Nitrofurantoin is a nitrofuran antibacterial agent used to treat urinary tract infections (UTIs) caused by many gram-negative and some gram-positive bacteria.