Davis's Drug Guide
- Gabitril
- Gablofen
- Galexos
- GamaSTAN S/D
- Gamifant
- gamma benzene hexachloride
- Gammagard S/D
- Gammaplex
- Gamunex-C
- Ganidin NR
- Ganite
- Gantanol
- Gantrisin
- Garamycin
- Gardasil
- Gardasil 9
- Garden Heliotrope
- garden sage
- Garden Valerian
- Gas Relief
- Gastrocrom
- Gas-X
- Gattex
- Gazyva
- GBH
- Gelclair
- Gel Kam
- Gelnique
- Gel-Tin
- Gemmily
- Gemtesa
- Gemzar
- Genahist
- Genasyme
- Gen-bee with C
- Gencalc
- Generess Fe
- Generlac
- GenESA
- gengibre
- Gengraf
- Genotropin
- Genotropin GoQuick
- Genotropin MiniQuick
- Genvoya
- Gen-XENE
- Geocillin
- Geodon
- German, Hungarian, or common chamomile (Matricaria chamomilla, Matricaria recutita)
- Gianvi
- Giapreza
- Giazo
- Gildagia
- Gilenya
- Gilotrif
- Gimoti
- ginger root
- ginkgo folium
- Giotrif
- Givlaari
- Glassia
- Glatect
- Glatopa
- Gleevec
- Gleostine
- Gliadel
- Gloperba
- GlucaGen
- Glucobay
- Gluconorm
- Glucophage
- Glucophage XR
- glucose
- Glucotrol
- Glucotrol XL
- Glumetza
- glutamate
- glutamic acid
- Glutose
- glycine max
- GlycoLax
- Glycon
- Glycyrrhiza glabra
- Glydo
- Glynase
- Glyrx-PF
- Glyset
- Glyxambi
- Goatweed
- Gocovri
- GoLYTELY
- Gonal-F
- Gonal-F RFF
- Gralise
- Granix
- Grastek
- Grastofil
- Gravol
- Grifulvin-V
- Gris-PEG
- ground raspberry
- G salt
- Guiatuss
- gum plant
- gum tree
- Gvoke
- Gynazole-1
- Gyne-Lotrimin-3