A fast heartbeat, known as tachycardia, is treated numerous different ways including cutting down on caffeine, sedation and getting more rest, according to the American Heart Association. The rapid heart beats associated with tachycardia normally start in the upper chambers of the heart and have several causes including heavy smoking, anxiety and extreme fatigue.
There are several at home treatments that are known to work well, including pressing gently on eyelids when eyes of closed and gently applying pressure on the back of the neck. When at home methods do not produce results for treating tachycardia, patients can receive medications from their doctor to help slow their rapid heart rate down. These medications include adenosine and verapamil, as noted by NHS Choices.