Sodium adenosine triphosphate (ATP) is a metabolic remedy, has antiarrhythmic effect, also has antihypertensive effect, expands coronary and cerebral arteries. Is a natural macroergic compound. Formed in the body as a result of oxidative reactions and in the process of glycolytic cleavagecarbohydrates. Contained in many organs and tissues, but most of all - in skeletal muscles. Improves metabolism and energy supply of tissues. Due to its splitting into ADP and inorganic phosphate, ATP releases a large amount of energy used for muscle contraction, synthesis of protein, urea, intermediate products of metabolism, etc. Under the influence of ATP, blood pressure and relaxation of smooth muscles decrease, nerve impulses in vegetative ganglia improve and transmission of excitation from the vagus nerve to the heart, increases the contractility of the myocardium. After a transdermal introduction, it penetrates into the cells of the organs, where it splits into adenosine and inorganic phosphate with energy release. Subsequently, cleavage products are included in the synthesis of ATP. The antiarrhythmic effect is due to the adenosine formed during the decay of ATP, which suppresses the automatism of the sinus-atrial node and Purkinje fibers (calcium channel blockade and increased permeability for potassium ions).