- Haloperidol
- Heparin
- Heroin
- Hetacillin
- Hexachlorophene
- Hexamethonium
- Hexocyclium
- Hexoprenaline
- Homatropine
- Hormonal Pregnancy Test Tablets
- Hydralazine
- Hydriodic Acid
- Hydrochlorothiazide
- Hydrocodone
- Hydrocortisone
- Hydroflumethiazide
- Hydromorphone
- Hydroxychloroquine
- Hydroxyprogesterone
- Hydroxyurea
- Hydroxyzine
- Hyperalimentation, Parenteral
