Baclofen is available both as an oral and an injectable medicine that works to relax the skeletal muscles that are responsible for the movement of the body. Baclofen is related to the gamma-aminobutyric acid commonly known as GABA. This is naturally present in the brain as a neurotransmitter. Neurotransmitters are the chemicals that are used to send messages to the other nerve.
When GABA is released in the brain, it retards the activity of some nerves in the brain. Baclofen also works like GABA and blocks the working of nerves within the brain that are responsible for the contraction and relaxation of the muscles.