I have very bad asthma I take asmanex 220 mcg 4 times a day. Serevent disk 2 times a day. Prednisone 30mg <hate it> and singulair 10mg so with that being said I still have trouble with my asthma but the funny thing is when I take the singulair at night it helps a little and I can only take it once a day. So I wonder if Benadryl would have any benefit taking it daily for morning and afternoon. My asthma is caused mostly by allergy. Mold..dust mites..Pets. And a few other things. Was just curious if anybody else might had something similar like this and what they took to help them get by day by day.