1-Aanalgesics and narcotics e.g .morphine and codeine

2-CNS stimulants e.g.caffeine and strychnine.5-Antitussive e.g .codeine

6- Expectorants e.g.lobeline

7-Anti-hypertensives e.g.reserpine.10-Anthelmintics e.g.pelletierine and arecoline