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.
Antibiotics for Strep. If you do have this throat infection, your doctor may give you a shot or prescribe 5 to 10 days of antibiotic pills. You'll probably feel better in a day or two, but it's vital to take the entire course of medication anyway -- otherwise some of the bacteria may survive.n infection called Group A Streptococcus causes strep. A virus is usually to blame for a simple sore throat. Antibiotics can ease strep symptoms, get rid of it faster, and lower the risk of complications.