- Gabitril
- Gastrocrom
- Gefitinib
- Genoptic
- Genvoya
- Geodon
- Gilenya
- Gilotrif
- Gleevec
- Gliclazide
- Glimepiride
- GlucaGen Hypokit
- Glucagon Injection
- Gluconorm
- Glucophage
- Glucophage XR
- Glucotrol
- Glucotrol XL
- Glucovance
- Glumetza
- Glyburide
- Glynase
- Glyset
- Glyxambi
- GoHealthy Probiotic
- Gonal-F
- Gonal-F Pen
- Grifulvin V