| Abbreviation | Definition |
|---|---|
| GAZT | Azidothymidine glucuronide |
| GBP | Gabapentin |
| GCDP | Global Commission on Drug Policy |
| GCPA | Good Clinical Practice Addendum |
| GDAS | Gloucestershire Drug and Alcohol Service |
| GDCC | Global Drug Commercialization Centre |
| GDD | Gene and Drug Delivery |
| GDD | Genesis Drug Discovery |
| GDF | Global Drug Facility |
| GDFSI | Generic Drug Firm Self Identification |
| GDTT | Gang and Drug Task Team |
| GDUFA | Generic Drug User Fee Amendment |
| GDUFA | Generic Drug User Fee Amendments |
| GGDEU | Guns, Gangs, and Drug Enforcement Unit |
| GGRD | Get Guap Rook Drugs |
| GNDP | Ghana National Drug Policy |
| GOD | Gold Oil and Drugs |
| GSSAC | Greater Spokane Substance Abuse Council (est. 1982; Washington) |
| GTT | Drops (not an acronym) |
| H2O2 | Hydrogen peroxide |