chemical castration
Medical or legal term for the use of drugs to reduce sexual function, often discussed in the context of sex offender treatment.
In some countries, chemical castration is carried out on sex offenders.
去勢 is a broader term for castration (surgical or chemical), while 化学的去勢 specifically refers to the chemical method.
Compound of 化学的 (chemical) + 去勢 (castration).