Materia Medica by William Boericke
- GALANTHUS NIVALIS
- GALIUM APARINE
- GALLICUM ACIDUM
- GAMBOGIA
- GAULTHERIA PROCUMBENS
- GELSEMIUM SEMPERVIRENS
- GENTIANA LUTEA
- GERANIUM MACULATUM
- GETTYSBURG WATER
- GINSENG QUINQUEFOLIUM
- GLONOINUM
- GLYCERINUM
- GNAPHALIUM POLYCEPHALUM
- GOSSYPIUM HERBACEUM
- GRANATUM
- GRAPHITES
- GRATIOLA OFFICINALIS
- GRINDELIA ROBUSTA
- GUACO
- GUAJACUM OFFICINALE
- GUARANA
- GUAREA TRICHILOIDES
- GYMNOCLADUS CANADENSIS