Since you didn't mention what drug, but you did say he is irritable, could he be on Toprol XL? That was the first drug given to me and boy was I irritable and I will add to that, depressed. It changed my happy go lucky personality into one of being a misery. After two months, two miserable months, I ceased taking this pill. Then it was onto Atenolol - which I am now completely off of too. It feels wonderful to be drug free right now with b/p that's fine, per my doctor. These two drugs wrecked havoc on me and my body and it really urks me when the doctors say "but I'm on the same drug and I feel fine." DUH!!!!! that's them - I'm me, and I was/am not fine! But now, it's like I have a new lease on life. The suffering is over. Should I have to go on another drug in the future, it will never, ever, be a beta blocker. I actually thought I was dying! But so glad that I didn't.!
Happy Memorial Day to all. Stay clear of the salt for your BBQ!!! LOL!!!!