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.
Penicillin is often the first choice of antibiotic for strep throat unless you are allergic to it. Most antibiotics are taken for 10 days. Or a single shot of penicillin may be given. The shot does not help you get better any faster than other types of penicillin.