Gabapentin
Galantamine
Gamma-hydroxybutyrate
Ganciclovir
Ganirelix
Gatifloxacin
Gefitinib
Gemcitabine
Gemfibrozil
Gemifloxacin

Gemtuzumab
Gentamicin
Glatiramer
Glimepiride
Glipizide
Glucagon
Glucosamine
Glutathione
Glyburide
Glycopyrrolate

Gold Thiomalate
Gonadorelin
Goserelin
Granisetron
Grepafloxacin
Griseofulvin
Guaifenesin
Guanethidine
Guanfacine

Gabitril@
Galzin@
Gamastan@
Gamimune@
Gammagard@
Gamma Interferon@
Gantanol@
Gantrisin@
Gastrocrom@
Gemzar@
Genacote@
Genahist@
Genapap@
Genaphed@
Genatuss Red@
Gencor@

Genebs@
Gengraf@
Genoptic@
Genotropin@
Genpril@
Gentak@
Geocillin@
Geodon@
Geref@
Gesterol@
GHB@
Glaucon@
Glauctabs@
Gleevec@
GlucaGen@
Glucophage@

Glucotrol@
Glucovance@
Glynase@
Glyset@
Go-Lytely@
Gonal - F@
Grisactin@
Guabid-La@
Guaifen@
Guaifene@
Guiatex@
Guiatuss@
Gynazole@
Gyne-Lotrimin@