A method of treatment of rheumatoid arthritis in humans in need thereof which comprises administering to said human an effective rheumatoid arthritis treatment amount of compound 2,4-diamino-6-(2,5-dimethoxybenzyl)-5-methylpyrido[2,3-d]pyrimidine or pharmaceutically acceptable acid addition salt thereof.
This invention relates to pharmaceutical compositions containing 5-methyltetrahydrofolic acid, 5-formyltetrahydrofolic acid and their pharmaceutical acceptable salts in controlled-release form which are active in the therapy of organic mental disturbances and in particular in the treatment of senile and presenile primary degenerative dementia of Alzheimer type and multiinfarctual dementia.