The following points highlight the five important drugs that are obtained from plants. The important drugs are: 1. Opioids 2. Cannabinoids 3. Coca Alkaloid or Cocaine 4. Hallucinogens 5. Tobacco. Drug # 1. Opioids: Opioids or opiates are drugs that bind to opioid receptors present in human central nervous system and gastrointestinal tract. These have […]