| Material | Scientific name | Reference | Limitation |
| Angola weed | Roccella fuciformis Ach | 21CFR172.510 | In alcoholic beverages only |
| Arnica flowers | Arnica montana L., A. fulgens Pursh, A. sororia Greene, or A. cordifolia Hooker | 21CFR172.510 | In alcoholic beverages only |
| Artichoke leaves | Cynara scolymus L | 21CFR172.510 | In alcoholic beverages only |
| Boldus (boldo) leaves | Peumus boldus Mol | 21CFR172.510 | In alcoholic beverages only |
| Bryonia root | Bryonia alba L., or B. diocia Jacq | 21CFR172.510 | In alcoholic beverages only |
| Buckbean leaves | Menyanthes trifoliata L | 21CFR172.510 | In alcoholic beverages only |
| Calcium Pyrophosphate | Calcium Pyrophosphate | 21CFR182.5223 21 CFR182.8223 | Dietary Supplements; Nutrients |
| Calumba root | Jateorhiza palmata (Lam.) Miers | 21CFR172.510 | In alcoholic beverages only |
| Centuary | Centaurium umbellatum Gilib | 21CFR172.510 | In alcoholic beverages only |
| Chirata | Swertia chirata Buch.-Ham | 21CFR172.510 | In alcoholic beverages only |
| Cork, oak | Quercus suber L., or Q. occidentalis F. Gay | 21CFR172.510 | In alcoholic beverages only |
| Costmary | Chrysanthemum balsamita L | 21CFR172.510 | In alcoholic beverages only |
| Dittany (fraxinella) roots | Dictamnus albus L | 21CFR172.510 | In alcoholic beverages only |
| Elder tree leaves | Sambucus nigra L | 21CFR172.510 | In alcoholic beverages only; not to exceed 25 p.p.m. prussic acid in the flavor |
| Elecampane rhizome and roots | Inula helenium L | 21CFR172.510 | In alcoholic beverages only |
| Galanga, greater | Alpinia galanga Willd | 21CFR172.510 | In alcoholic beverages only |
| Gentian, stemless | Gentiana acaulis L | 21CFR172.510 | In alcoholic beverages only |
| Germander, chamaedrys | Teucrium chamaedrys L | 21CFR172.510 | In alcoholic beverages only |
| Germander, golden | Teucrium polium L | 21CFR172.510 | In alcoholic beverages only |
| Iceland moss | Cetraria islandica Ach | 21CFR172.510 | In alcoholic beverages only |
| Isopropyl Citrate | Isopropyl citrate | 21CFR184.1386 | The ingredient is used as an antioxidant, a sequestrant and a solvent in margarine, nonalcoholic beverages and in fats and oils. |
| Iva | Achillea moschata Jacq | 21CFR172.510 | In alcoholic beverages only |
| Lemon-verbena | Lippia citriodora HBK | 21CFR172.510 | In alcoholic beverages only |
| Linden leaves | Tillia spp | 21CFR172.510 | In alcoholic beverages only |
| Maidenhair fern | Adiantum capillus-veneris L | 21CFR172.510 | In alcoholic beverages only |
| Mullein flowers | Verbascum phlomoides L. or V. thapsiforme Schrad | 21CFR172.510 | In alcoholic beverages only |
| Myrtle leaves | Myrtus communis L | 21CFR172.510 | In alcoholic beverages only |
| Oak, English, wood | Quercus robur L | 21CFR172.510 | In alcoholic beverages only |
| Pansy | Viola tricolor L | 21CFR172.510 | In alcoholic beverages only |
| Peach leaves | Prunus persica (L.) Batsch | 21CFR172.510 | In alcoholic beverages only; not to exceed 25 p.p.m. prussic acid in the flavor |
| Pine, white, bark | Pinus strobus L | 21CFR172.510 | In alcoholic beverages only |
| Poplar buds | Populus balsamifera L. (P. tacamahacca Mill.), P. candicans Ait., or P. nigra L | 21CFR172.510 | In alcoholic beverages only |
| Red saunders (red sandalwood) | Pterocarpus san alinus L | 21CFR172.510 | In alcoholic beverages only |
| Rhubarb, garden root | Rheum rhaponticum L | 21CFR172.510 | In alcoholic beverages only |
| Roselle | Hibiscus sabdariffa L | 21CFR172.510 | In alcoholic beverages only |
| Rosin (colophony) | Pinus palustris Mill., and other Pinus spp | 21CFR172.510 | In alcoholic beverages only |
| St. Johnswort leaves, flowers, and caulis | Hypericum perforatum L | 21CFR172.510 | Hypericin-free alcohol distillate form only; in alcoholic beverages only |
| Sandarac | Tetraclinis articulata (Vahl.), Mast | 21CFR172.510 | In alcoholic beverages only |
| Serpentaria (Virginia snakeroot) | Aristolochia serpentaria L | 21CFR172.510 | In alcoholic beverages only |
| Simaruba bark | Simaruba amara Aubl | 21CFR172.510 | In alcoholic beverages only |
| Stearyl Citrate | Stearyl Citrate | 21CFR184.1851 | The ingredient is used as an antioxidant, an emulsifier, a sequestrant and a surface-active agent in margarine, nonalcoholic beverages and in fats and oils. |
| Tansy | Tanacetum vulgare L | 21CFR172.510 | In alcoholic beverages only; finished alcoholic beverage thujone free |
| Thistle, blessed (holy thistle) | Onicus benedictus L | 21CFR172.510 | In alcoholic beverages only |
| Veronica | Veronica officinalis L | 21CFR172.510 | In alcoholic beverages only |
| Vervain, European | Verbena officinalis L | 21CFR172.510 | In alcoholic beverages only |
| Vetiver | Vetiveria zizanioides Stapf | 21CFR172.510 | In alcoholic beverages only |
| Woodruff, sweet | Asperula odorata L | 21CFR172.510 | In alcoholic beverages only |
| Yarrow | Achillea millefolium L | 21CFR172.510 | In beverages only; finished beverage thujone free |
Flavoring Substances and Adjuvants that are Used Only in Certain Situations
Last updated: January 6, 2019