The purpose of an antihistamine is to work against the effects of histamine, a chemical substance found in nearly all body tissues. Histamine is released in response to injury or invasion by foreign substances such as pollens (see allergy). It is also the irritating agent in certain insect venoms.
Metronidazole for a Strep B Infection. Group B Strep is a strain of the streptococcus bacteria that can cause serious illness and is potentially life threatening, especially in newborns, pregnant women, elderly patients, or anyone with any already compromised immune system.
Usually the antibiotic used for strep throat is a form of penicillin (say: peh-neh-SIL-in). To make sure the bacteria go away completely and don't spread to other parts of your body, you must finish all of the medicine. Your doctor will have you take the pills or liquid for 10 days.