Active ingredient
[ar] مكون فعال
[ca] Principi actiu
[cs] Léčivo#Léčivá látka
[de] Arzneistoff
[eo] Farmako
[es] Principio activo
[eu] Osagai aktibo
[fa] ماده مؤثره
[fr] Substance active (médicament)
[he] חומר פעיל