The drug is quickly and completely absorbed from the digestive tract.
Pyracetam
Suction. Bioavailability of piracetam is 95%. Maximum concentration piracetam is achieved in 2-6 hours.
Distribution. Pyracetam does not bind to blood plasma proteins. Penetrates through blood-brain and placental barriers. It accumulates in the brain tissue 1-4 h after ingestion. From the cerebrospinal fluid is derived much more slowly than from other tissues.
Metabolism and excretion. Pyracetam practically not metabolized. Half-life pyracetam from the blood plasma - 4,5 h, half-life from the brain - an average of 7.7 hours. It is mainly excreted by the kidneys (more than 95% of the dose taken for 30 hours).
Cinnarizine
Suction. The maximum concentration of cinnarizine is reached in 1-4 hours.
Distribution. The maximum concentration of cinnarizine after 1-4 hours is noted not only in the blood, but also in the liver, kidneys, heart, lungs, spleen and brain. Binding to blood plasma proteins - 91%.
Metabolism and excretion. Cinnarizine completely metabolized in the liver (by dealkylation). The half-life of cinnarizine is 4 hours. It is excreted in the form of metabolites (1/3 - kidneys with urine, 2/3 - through intestines with feces).