What should you know about non depolarising muscle relaxant?

These medicines act at the connection between a nerve and a muscle. They block the chemical signal that normally produces contraction, causing controlled muscle weakness or relaxation. In hospital care, they may be used during anaesthesia or other procedures; they are not ordinary self-care tablets for a back spasm. They do not provide pain relief or make someone unconscious by themselves. Breathing muscles can also be affected, so airway support and monitoring are part of safe use. A clinician may discuss symptoms such as [Back Muscle Spasm](/symptoms/back-muscle-spasm/) separately from this medicine class.

Take or receive this medicine only exactly as prescribed and tell the care team about every medicine, supplement, allergy and neuromuscular condition. Do not drive, drink alcohol or make safety-critical decisions until the clinician confirms that strength and alertness have returned. After a procedure, follow instructions about supervision and activity. Persistent cramps or spasms may need a different approach, such as assessment of the cause, stretching or physiotherapy, rather than a paralysing medicine.

During or after treatment, get emergency help for trouble breathing, inability to swallow, severe weakness, collapse, wheezing or swelling of the face or throat. Contact the treating team for weakness that lasts longer than expected, repeated falls, or difficulty speaking or moving. The timing and severity of these symptoms matter because the medicine can affect respiratory muscles and recovery may need monitoring.

Ask: Why is this medicine needed? How will breathing and muscle strength be monitored? Which medicines could prolong its effect? When is it safe to walk, drive or be alone? What symptoms require emergency help?