
Originally Posted by
tballz
And I don't agree with using benedryl instead of Ketotifen. The research showing beta-2 up-regulation has been with ketotifen. While both ketotoifen and diphenhydramine are H1-antihistamines, they have markedly different chemical structures and belong to two different generations of anti-histamines. As far as I know, the mechanism through which ketotifen up-regulates the beta-2 adrenoreceptor has not been proven. I think it's premature to argue that diphenhydramine will do the same as ketotifen because it's another antihistamine.