I am one of those unfortunate guys that has a lot of allergies, my most irritating allergy is dust. I can't clean my room without allergic symptoms after. I also used to work in a factory and dust is just all everywhere. I've been taking antihistamine lately, it is very effective. I love the side effects though, I feel drowsy and just weak and that floating sensation, I loved that feeling. I think I have been taking more than what I need. Any advice will be appreciated.