外がい用よう

noun, noun or participle which takes 'suru', transitive verb, noun which may take the genitive case particle 'no'

external use; for external application

Used primarily in medical and pharmaceutical contexts to indicate that a medicine or product is applied to the outside of the body, not taken internally.

• この薬くすりは外がい用ようのみで、飲のまないでください。

  This medicine is for external use only; do not take it internally.

• 外がい用よう薬やくを患かん部ぶに塗ぬってください。

  Please apply the external medicine to the affected area.