劇薬

1. Origins, structure, and basic meaning

• Structure: In 劇薬 (げきやく), severe 劇 and drug 薬 combine to denote a potent dangerous drug.
• Basic usage: 劇薬 denotes a drug or chemical with effects strong enough to require careful handling.

2. Common pitfalls and similar expressions

• Potency and handling risk
  • It is not praise for an effective medicine; the word foregrounds potency and danger.