Cyffuriau A i Y
- AmpDiffiniad
- AdferiadDiffiniad
- AlcaloidDiffiniad
- AdweithegDiffiniad
- Allan o dy benDiffiniad
- AIDSDiffiniad
- AgoraffobiaDiffiniad
- AciwbigoDiffiniad
- AspirinDiffiniad
- Ampylau wedi’u sychu drwy rewiDiffiniad
- AromatherapiDiffiniad
- Amanita'r gwybed (Fly agaric)Diffiniad
- Asid citrigDiffiniad
- AmpwlDiffiniad
- A2BZP
- AASSteroidau
- AcetateToddyddion
- AcetoneToddyddion
- AcidLSD
- ActiqFentanyl
- AfghaniCanabis
- Afiaith CyfreithiolNew Psychoactive Substances
- Afiaith LlysieuolNew Psychoactive Substances
- AlcoholAlcohol
- Alkyl NitritesPopwyr
- AlprazolamBenzodiazepinau
- AlprazolamXanax
- Amphetamine SulphateAmphetamines
- AmphetaminesAmphetamines
- Amyl NitritePopwyr
- Anabolic-Androgenic SteroidsSteroidau
- AnavarSteroidau
- Angel DustPCP
- Arabian Tea.Khat
- AtivanBenzodiazepinau