The drug stimulates central nervous system, especially cerebral cortex, medulla and spinal medulla to a lesser extent. The drug stimulates respiratory and vasomotor centers in the medulla, which leads to more frequent and deeper respiratory movements and increases pulmonary ventilation.
Under coffein-benzoate-sodium influence blood pressure is increased as a result of vasomotor center excitation and direct effect on heart. Under its influence blood vessels of abdominal organs and skin are narrowed and blood vessels of the heart, brain and kidneys are expanded, which also contributes to high blood pressure.
Coffein-benzoate-sodium stimulates heart and therefore absolute strength of heart contractions is increased and excitability of the heart muscle tissue is increased as well. Coffein increases water and nitrogen metabolism, eliminates acidosis, increases efficiency of striated muscle. It amplifies moving function of the gastrointestinal tract mainly due to excitation of the vagus nerve and improvement of metabolic processes.
During intoxication from coffein-benzoate-sodium such symptoms may be observed as heart disorders (decreased or increased heart pulse, arrhythmia), increased reflex excitability, colic-tonic convulsions, increased tone of skeletal muscles.