They're useful for the treatment of peptic ulcer, hiatal hernia, and other hyperacidity conditions.
Histamine attaches to nearby nerve endings and the cells that line small blood vessels via histamine receptors.
Antihistamines compete with histamine for the attachment sites on these receptors.
When histamine molecules canâï¿½ï¿½t attach to its receptors the target cell canâï¿½ï¿½t be activated.
The first antihistamines were developed during World War II.
These drugs have been around for as long as penicillin and fifteen years longer than TylenolÂ®.
Antihistamines are divided into two broad classes, H1 and H2 blockers, depending on which type of cells they effect.
H2-blockers, like PepcidÂ® and ZantacÂ®, decrease acid production in the stomach.
Antihistamines are a family of drugs having many uses in the treatment of allergic disorders.
If you have an allergy problem you've probably used and will use many different antihistamines.