It's Benadryl. Even the non drowsy ones make you drowsy.

I can typically fight through drowsy pills but "non" drowsy benadryl hits me like a truck. KO me.

Those aren't strong enough for some people though. My dad has to take benadryl in the fall because clariton doesn't do enough. It sucks for the first couple of days but benadryl doesn't really make you sleepy after your body gets used to it

It's also important that you take second generations every day, they don't work nearly as well when taken "as needed." If you still have no benefit, a lot of people have success with daily intranasal corticosteroids, aka Flonase and whatever others are available over the counter.

I wouldn't suggest those. If OPs allergies are that bad like mine are, they should take Zyrtec. WAY better and on really bad allergy days, my eyes only itch a little.

I second the Zyrtec. I've been taking it daily for years for indoor and out door allergies.

I tried Zyrtec when I was younger, didn't help me. I take Claritin but it's super expensive. Everyone's different though. I recommend taking two allergy meds with different active ingredients. It's good for the occasional bad day. Be sure they're different active ingredients though or you might accidentally overdose...

OP probably didn't realize it'd make them drowsy. I've made the same mistake once before, too.