薬で

with medicine

→ 薬
phrase Uncommon #15,584
with medicine 薬 means “medicine” or “drug,” and で marks the means or method: “with/by medicine.” In some contexts, 薬 can refer to illegal drugs, but that meaning is not intended in the medical examples.
JA: この薬で痛みが和らぐでしょう。
EN: This medicine should relieve the pain.

あの薬で眠くなってしまった

That medicine made me sleepy.

薬でもいいよ

Medicine is fine too.

— ロシアン・ブラザー (1997)

この薬で君の頭痛治る

This medicine will cure your headache.

その薬で私の痛みがすぐにとれたのには驚いた

I was surprised that the medicine relieved my pain so quickly.

この薬であなたの頭痛治るでしょう

This medicine should cure your headache.

この薬で痛みは緩和するでしょう

This medicine should relieve the pain.

うがい薬でたびたびうがいしてください

Please gargle with mouthwash frequently.

その薬ですぐになった

That medicine relieved my symptoms right away.

マッサージ薬で費用はかかる

With massages and medication, it does cost money, though.

— 最強のふたり (2011)