Buy Butalbital Online is a central nervous system (CNS) depressant that can be used to relieve tension headaches and as a relaxant when combined with acetaminophen, aspirin, and caffeine. Aspirin works in the relief of headache pain. Butalbital is a barbiturate medication that affects the central nervous system and has muscle-relaxing and anti-anxiety properties. It can cause all types of CNS( central nervous system) mood changes, from excitation to hypnosis, mild sedation, and deep coma.