薬の

of medicine

→ 薬
phrase Uncommon #12,063
of medicine 薬の is 薬 (medicine) followed by の, which links it to the following noun or phrase, often meaning “of medicine” or “medicine-related.”
JA: 薬の副作用について医師に聞きました。
EN: I asked the doctor about the medicine's side effects.

薬の処方箋を作ってあげましょう

I'll write you a prescription.

薬の限界

This is the limit of what medicine can do.

— 最強のふたり (2011)

医者は彼にその薬の危険性警告した

The doctor warned him about the dangers of the medicine.

トム薬の副作用の説明を聞いて不安になった

Tom became anxious after hearing about the medication's side effects.

この薬の副作用は何ですか

What are the side effects of this medicine?

何か薬のアレルギーはありますか

Do you have any allergies to medications?

薬の箱は子供の手の届かない場所に置いておくべきです

Medicine boxes should be kept out of children's reach.

薬の効力切れた

The medicine has worn off.

— ミッション・クレオパトラ (2002)

薬の飲みを教えてください

Please tell me how to take this medicine.