Dantrolene is best described as what type of medication in clinical practice?

Dantrolene is best described as what type of medication in clinical practice?

• A. Muscle relaxant for spasticity
• B. Analgesic
• C. Antibiotic
• D. Antipyretic

Answer: (A)

Dantrolene is a direct-acting skeletal muscle relaxant. It works by blocking calcium release from the sarcoplasmic reticulum in skeletal muscle cells, via the ryanodine receptor, which lowers intracellular calcium and weakens the excitation–contraction coupling that drives muscle contraction. This peripheral action reduces muscle stiffness and spasticity, making it useful for conditions with spasticity and for the malignant hyperthermia crisis during anesthesia. It does not relieve pain like an analgesic, does not fight infections like an antibiotic, and does not reduce fever like an antipyretic.

Dantrolene is a direct-acting skeletal muscle relaxant. It works by blocking calcium release from the sarcoplasmic reticulum in skeletal muscle cells, via the ryanodine receptor, which lowers intracellular calcium and weakens the excitation–contraction coupling that drives muscle contraction. This peripheral action reduces muscle stiffness and spasticity, making it useful for conditions with spasticity and for the malignant hyperthermia crisis during anesthesia. It does not relieve pain like an analgesic, does not fight infections like an antibiotic, and does not reduce fever like an antipyretic.