The injectable drug Striadyne® was used to treat cardiac injuries, such as atrial tachycardia, paroxysmal supraventricular tachycardia and other arrhythmia. Each ampule (2ml) contained of 20mg of adenosine triphosphate (ATP), for a slow intramuscular or intraveneous injection. The injection of Striadyne stopped supraventricular tachycardia which is a common type of arrhythmia observed in children. ATP is a precursor of adenosine which is essential to myocardial conduction. There was also an oral formulation designated ‘Striadyne Forte’ using coated tablets, each containing 15 mg of ATP. The drug was also used to manage chronic fatigue. The drug is still occasionaly used today but strictly to treat cardiac artyhmia, at the hospital.