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.
A sore throat should be treated with antibiotics only if the strep test is positive. Antibiotics are taken to prevent rare but more serious health problems, such as rheumatic fever. Penicillin or amoxicillin are most often the first drugs to be tried. Certain other antibiotics may also work against the strep bacteria.