Problems of delivery of drugs to the brain.
D000818:Animals; D001599:Berberine / Q000378:metabolism; D001692:Biological Transport; D001812:Blood-Brain Barrier; D001921:Brain / Q000378:metabolism*; D004298:Dopamine / Q000008:administration & dosage; D006801:Humans; D007278:Injections, Spinal; D004364:Pharmaceutical Preparations / Q000378:metabolism*; D014677:Pharmaceutical Vehicles; D010627:Phenethylamines / Q000008:administration & dosage; D011220:Pralidoxime Compounds / Q000378:metabolism; D013739:Testosterone / Q000008:administration & dosage
D004364:Pharmaceutical Preparations; D014677:Pharmaceutical Vehicles; D010627:Phenethylamines; D011220:Pralidoxime Compounds; D001599:Berberine; D013739:Testosterone; D004298:Dopamine