Y55 — Agents primarily acting on smooth and skeletal muscles and the respiratory system

Descendentes
Código	Descripción
Y550	Oxytocic drugs
Y551	Skeletal muscle relaxants [neuromuscular blocking agents]
Y552	Other and unspecified agents primarily acting on muscles
Y553	Antitussives
Y554	Expectorants
Y555	Anti-common-cold drugs
Y556	Antiasthmatics, not elsewhere classified
Y557	Other and unspecified agents primarily acting on the respiratory system

Rúbrica de la agregación CIM-10 (en) a la cual pertenece

Y40-Y59 Drugs, medicaments and biological substances causing adverse effects in therapeutic use