Cyffuriau A i Y
- Rhithbair (Hallucinogenic)Diffiniad
- Rhwymyn tynhauDiffiniad
- RoofiesDiffiniad
- RohypnolDiffiniad
- RockheadDiffiniad
- RizlaDiffiniad
- RippedDiffiniad
- Rip OffDiffiniad
- RehabDiffiniad
- ReeferDiffiniad
- RêfDiffiniad
- RhagsylweddionDiffiniad
- RushDiffiniad
- RamPopwyr
- RavePopwyr
- RaveNRG1
- Red & BlueTemazepam
- Red MitsubishiPMA
- Red SealCanabis
- ResinCanabis
- Rhino KetMethoxetamine
- RockyCanabis
- RoflcoptrMethoxetamine
- RoidsSteroidau
- RolliesNicotin
- Rugby BallsTemazepam
- RuggersTemazepam
- RushPopwyr
- RymAlcohol