What is botulinum neurotoxin?

Botulinum neurotoxin is made from the bacterium Clostridium botulinum. It is a nerve blocker that binds to the muscle nerves. The neurotoxin prevents the release of acetylcholine, a neurotransmitter that tells your muscles to contract. When this signal is blocked, muscle spasms are significantly reduced or eliminated.

Botulinum neurotoxin is injected into specific muscles. It helps relax muscles and reduce excessive muscle contractions.

Continue Learning about Dystonia


When your muscles contract involuntarily, the condition is called dystonia. Dystonia causes a twisting or clenching of whatever body part is affected. For example, when you have a stroke, the affected arm and hand may be clenched ...

and held in a strange position. Dystonia can be very mild or very severe. It can make your life very difficult and this can lead to frustration, depression or anxiety. See your doctor to treat your symptoms and talk over your frustrations.

Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.