| Glutathione |
| Gluten |
| Glycerinum |
| Glycine |
| Glycyrrhiza |
| Glyoxalide (Koch's Lymph) |
| Gnaphalium Polycephalum |
| Goat Blood |
| Goat Foot Rot |
| Goat Hair |
| Golden Hamster (Pel Cavae Cobaiae) |
| Golden Topaz (Immersion) |
| Goldfish (Carassius Auratus) |
| Golden Eagle (Aquila chrysaetos) |
| Gonococcin (Medorrhinum) |
| Goose (Anser Anser) |
| Goose Feather (Canada, Branta Canadensis) |
| Goose Feathers |
| Gorilla |
| Gorse |
| Gossypium Herbaceum (G. Barbadense) |
| Granatum (Punica Gran) |
| Granite |
| Grapefruit |
| Graphites |
| Graphium Agamemnon (Tailed Jay Butterfly) |
| Grasses (mixed) |
| Grasses and Pollens (mixed) |
| Grasses and Flower Pollens (mixed) |
| Gratiola Off |
| Great Blue Heron (Ardea Herodias) |
| Great Horned Owl (BuboVirginianus) |
| Green Bottle Fly (Lucilia Sericata) |
| Green Lipped Mussel (Perna Can) |
| Green Mamba (Dendroaspis Viridis) |
| Green S (E142) |
| Grey Heron (Ardea Cinerea) |
| Grimmia Antarctici |
| Grindelia Robusta |
| Grouse (Bonasa Umbellus) |
| Guaco (Guaco Mikana) |
| Guaiacum Off |
| Guanidine Hydrochloride |
| Guarana |
| Guatteria Guameria |
| Guinea Pig Hair |
| Gummi Gutti (Gambogia) |
| Gunpowder |
| Gurea Trichiloides |