Are there any side effects associated with baclofen?

Of course: Chest pain, seizure, headache and fatigue are just a few that are possible. Ask your doctor if you have any negative reactions to this or any other medication.

Baclofen: Baclofen is often used in the treatment of spasticity, often through the form of implanted pumps. Baclofen overdose can cause death via respiratory failure. Similarly, Baclofen withdrawal can also lead to significant problems and even death.