薬剤|やくざいyakuzai[0]heiban (flat)

1. nounmedicine; drug
2. nounchemical agent (e.g. pesticide, bleach, lubricant); chemical

• Synonym医薬品いやくひんWrittenWritten, legal and industry term for drugs used in diagnosis, treatment and prevention; 「薬剤」 also covers pesticides, bleach and other chemical agents.
• Synonym薬品やくひんNeutralMeans medicines and also chemical reagents; close to 「薬剤」, but more often finished medicines and test reagents.
• Synonym薬くすりNeutralThe most everyday word for medicine, also used for pesticides and pottery glazes; 「薬剤」 is the technical, written term.
• Synonym医薬いやくWrittenCovers medical treatment and drugs; mostly in compounds like 「医薬分業」, rarely used alone.
• Related薬餌やくじWrittenWritten and dated word for medicine and food; seen mostly in 「薬餌療法」.

Everyday speech uses 「薬」; legal or industry contexts use 「医薬品」. 「薬剤」 fits prepared or chemical agents like pesticides and cleaners, as in 「薬剤師」. 「薬品」 covers medicines and reagents; 「薬餌」 and 「医薬」 are written, rarely used alone.

Usage comparisons are AI-assisted and cross-checked by multiple models; for study reference only

1. いくつかの薬品やくひんを調合ちょうごうしたもの。薬くすり。