@Bully
Thanks for your message.
Based on each individuals personal health and family history, a medication that may be effective and appropriate for one person, may not be for another. If an individual may have irregularities with their heart beat, then any medication that may have any influence on the heart rate would likely not be an appropriate option.
That is why that we would suggest that as with any medication, you are advised to see your own GP/family doctor who will have the benefit of your medical history and can further advise you and answer your questions with regards to suitability and if there are any concerning side effects in your case. Based on their recommendations you can decide if it may be an option for you, your doctor can then list it on your medical history and if you do experience any side effects, he has knowledge to be able to advise you further.