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 (nitrofurantoin monohydrate/macrocrystals) is an antibacterial drug used to treat urinary tract and bladder infections caused by Escherichia coli or Staphyloccocus saprophyticus strains of bacteria that are sensitive to this drug.The drug is available as a generic under the name nitrofurantoin.ell your doctor immediately if any of these rare but very serious side effects occur: eye pain, vision changes, mental/mood changes, persistent/severe headaches, new signs of infection (e.g., fever, persistent sore throat), easy bruising/bleeding.