II. Respect for the Dignity of Persons

From The Catechism of the Catholic Church

2291
The use of drugs inflicts very grave damage on human health and life. Their
use, except on strictly therapeutic grounds, is a grave offense. Clandestine
production of and trafficking in drugs are scandalous practices. They
constitute direct co-operation in evil, since they encourage people to
practices gravely contrary to the moral law.

PART THREE: LIFE IN CHRIST

SECTION TWO THE TEN COMMANDMENTS
- CHAPTER TWO YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF
  - Article 5 THE FIFTH COMMANDMENT
    - II. Respect for the Dignity of Persons

From The Catechism of the Catholic Church – rosary.team