| BRAND | GENERIC NAME |
| Gabapentin | Neurontin |
| Gabitril | Tiagabine Hydrochloride |
| Gadodiamide | Omniscan |
| Gadopentetate Dimeglumine | Magnevist |
| Gadoteridol Injection Solution | ProHance |
| Gadoversetamide Injection | OptiMARK |
| Gadoxetate Disodium Injection | Eovist |
| Galantamine HBr ER | Razadyne ER |
| Galsulfase | Naglazyme |
| Gammagard | Immune Globulin |
| Gammagard Liquid | Immune Globulin Intravenous |
| Gamunex | Immune Globulin Intravenous |
| Ganciclovir | Cytovene |
| Ganciclovir | Vitrasert |
| Ganirelix | Ganirelix Acetate Injection |
| Ganirelix Acetate Injection | Ganirelix |
| Gantanol | Sulfamethoxazole |
| Gantrisin | Acetyl Sulfisoxazole Pediatric Suspension |
| Gardasil | Quadrivalent Human Papillomavirus |
| Gatifloxacin | Removed from US Market - May 2006 |
| Gatifloxacin Ophthalmic Solution | Zymar |
| Gelnique | Oxybutynin Chloride 10 % Gel |
| Gemcitabine Hcl | Gemzar |
| Gemfibrozil | Lopid |
| Gemifloxacin Mesylate | Factive |
| Gemtuzumab Ozogamicin for Injection | Mylotarg |
| Gemzar | Gemcitabine Hcl |
| Genoptic | Gentamicin Sulfate Ophthalmic |
| Genotropin | Somatropin [rDNA origin] |
| Gentak | Gentamican Sulfate Ophthalmic Ointment |
| Gentamican Sulfate Ophthalmic Ointment | Gentak |
| Gentamicin and Prednisolone Acetate | Pred-G |
| Gentamicin Injection Pediatric | Gentamicin Pediatric |
| Gentamicin Pediatric | Gentamicin Injection Pediatric |
| Gentamicin Sulfate Ophthalmic | Genoptic |
| Geocillin | Carbenicillin Indanyl Sodium |
| Geodon | Ziprasidone |
| Getfitinib | Iressa |
| Ginkgo biloba | Ginkgo Biloba |
| Ginseng | Korean Panax Ginseng |
| Glatiramer Acetate | Copaxone |
| Gleevec | Imatinib Mesylate |
| Gliadel | Polifeprosan 20 with Carmustine |
| Glimepiride | Amaryl |
| Glipizide | Glucotrol |
| Glipizide and Metformin | Metaglip |
| Glipizide Extended Release | Glucotrol XL |
| GlucaGen | Glucagon [rDNA origin] for Injection |
| Glucagon [rDNA origin] for Injection | GlucaGen |
| Glucophage, Glucophage XR | Metformin Hcl |
| Glucotrol | Glipizide |
| Glucotrol XL | Glipizide Extended Release |
| Glucovance | Glyburide and Metformin |
| Glumetza | Metformin Hcl |
| Glyburide | Micronase |
| Glyburide and Metformin | Glucovance |
| Glyburide Tablets | DiaBeta |
| Glycopyrrolate | Robinul |
| Glynase PresTab | Micronized Glyburide Tablets |
| Glyset | Miglitol |
| Gold Sodium Thiomalate | Myochrysine |
| Gonadorelin | Factrel |
| Gonal-F | Follitropin Alfa |
| Gonal-f RFF | Follitropin Alfa Injection |
| Goserelin | Zoladex |
| Granisetron | Kytril |
| Granisetron Hydrochloride | Kytril Injection |
| Granisetron Transdermal System | Sancuso |
| Grepafloxacin | Raxar |
| Grifulvin V | Griseofulvin Microsize |
| Gris Peg | Griseofulvin |
| Griseofulvin | Gris Peg |
| Griseofulvin Microsize | Grifulvin V |
| Guaifenesin | Organidin NR |
| Guaifenesin and Codeine | Robitussin Ac |
| Guaifenesin and Phenylephrine | Entex La |
| Guaifenesin and Pseudoephedrine | Deconsal |
| Guaifenesin Pseudoephedrine Extended-Release Tablets | Guaifenex PSE 60 |
| Guaifenex PSE 60 | Guaifenesin Pseudoephedrine Extended-Release Tablets |
| Guanethidine Monosulfate | Ismelin |
| Guanfacine | Guanfacine Hydrochloride |
| Guanfacine Hydrochloride | Guanfacine |
| Gynazole | Butoconazole |
| Gyne-Lotrimin | Clotrimazole Vaginal Cream |
