| | M - Musculo-Skeletal System |  |  | 
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| | M03 - Muscle Relaxants |  | This group comprises peripherally, centrally and directly acting muscle relaxants.See also G04BD - Drugs for urinary frequency and incontinence.
 
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| | M03A - Muscle Relaxants, Peripherally Acting Agents |  | This group comprises peripherally acting muscle relaxants such as curare alkaloids and suxamethonium.The drugs in this group are mainly used together with anesthetics.
 
 |  | As for other drugs used in general anesthesia (see N01A), no DDDs have been established in this group because the doses used vary substantially.
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| | M03AC - Other Quaternary Ammonium Compounds |  | Sugammadex indicated for reversal of neuromuscular blockade induced by rocuronium or vecuronium is classified in V03AB - Antidotes.
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