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.
1 Cellulitis: usually wish to cover streptococci. Uncertain how much S. aureus accounts for cellulitis without associated purulent focus (abscess) but believed to be low. 2  Cephalexin 500mg PO four times a day x 7-10d.  Dicloxacillin 125mg (mild) or 250-500mg (moderate to severe) PO four times daily x 7-10d.