H
- Halazepam
- Haloperidol
- Haloperidol, Dihydro
- Haloxazolam
- Haloxyfop-Methyl
- Harmaline
- Harmine
- HDEP-28
- HDMP-28
- Heptaminol
- Heptanoyl Fentanyl
- Heptenophos
- Heroin
- Hexahydrocannabinol (HHC)
- Hexahydrocannabiphorol
- Hexamine
- Hexanoyl Fentanyl
- Hexarelin
- Hexazinone
- Hexedrone
- Hexobarbital
- Hexylone
- HHC acetate
- HMA
- Homarylamine
- Homosildenafil
- Hordenine
- HOT-2
- HOT-7
- HU-210
- HU-308
- HU-331
- Hydralazine
- Hydrochlorothiazide
- Hydrocodone
- Hydrocortisone (cortisol)
- Hydrocortisone-acetate
- Hydroflumethiazide
- Hydromorphone
- Hydroquinidine
- Hydroxetamine
- Hydroxy-THC
- Hydroxybupropion
- Hydroxyhomo sildenafil
- Hydroxyprogesterone
- Hydroxyzine