Pharmaceutical compositions

摘要

A pharmaceutical composition containing as an essential ingredient a compound of the formula <IMAGE> (I) wherein one of the groups R1, R2 and R3 is an omega - or ( omega -1)-hydroxyalkyl group having from 5 to 8 carbon atoms in which the hydroxy group is separated from the xanthine nucleus by at least 2 carbon atoms, radicals R1 and R3 which are no hydroxylalkyl group, are hydrogen or methyl and equal or different, and R2 is said hydroxyalkyl group or methyl, a compound of formula (I) and a pharmaceutical product for treatment of diseases involving insufficiency of cerebral blood flow.