I’ve had multiple issues with it. The first was my bp shot up to over 200/100 with the first pill I swallowed. Multiple trips to the pharmacist, the manufacturer and my doctor left everyone puzzled. Finally the manufacturer said I’m one of the rare cases where I’m highly allergic to it. Get this now, not the medicine but the coating that holds the pill together. We tried multiple manufacturer and got worse reactions. The medicine does help my palpitations but I cannot use more than 25mgs daily, if I use more, my bp skyrockets. So don’t give up on the medicine, talk to your pharmacist and see what they say.