In therapy it is known that the combination of vitamin B6 and magnesium is beneficial in the treatment of several forms of primary magnesium deficiency. The purpose of the present study was to investigate the effect of complex magnesium supplementation containing mineral bishofit solution (MgCl2 x 6H2O) and pyridoxine hydrochloride on behavioural and biochemical parameters of magnesium-deficient alcoholic rats. A complex magnesium supplementation containing mineral bishofit solution and pyridoxine hydrochloride led both to restoration of magnesium level, and to some correction of behavioural disturbances of animals during chronic alcoholization.