Bark isolate
Bark isolates are chemicals which have been extracted from bark, which include the medicines salicylic acid and paclitaxel. The pharmacology of bark isolates is an ongoing topic of medical research.
| Isolate | Bark source | Researched activity |
| Paclitaxel, taxanes | Taxus | chemotherapeutic |
| Paeonol | Paeonia suffruticosa | various |
| Honokiol, 4-O-methylhonokiol, magnolol, obovatol | Magnolia | neurotrophic & anti-inflammatory |
| Salicylic acid | Salix alba | antipyretic, analgesic |
| Yohimbine, corynanthine, ajmalicine, rauwolscine | west African evergreen | MAOI, stimulant |
| beta-carbolines, harmala alkaloids | numerous | MAOI |
| Cinnamon, camphor, cinnamaldehyde | Cinnamomum | blood sugar stabilizer, antioxidant |
| Quinine, quinidine, cinchonidine, cinchonine | Cinchona | antipyretic, analgesic, antimalarial |
| Safrole | Sassafras | |
| Huáng bǎi | Amur cork tree | TCM |
| Strictamine | Alstonia scholaris | |
| Slippery Elm | demulcent | |
| Geniposidic acid | Eucommia ulmoides | |
| N-methyltryptamine, serotonin analogs | numerous species from Brazil, Mexico, Taiwan | serotonin agonist, neuroimmunologic modulator |
| Quassin | Quassia amara | various |
| Celastrol | Tripterygium wilfordii | various |
| Mitraphylline | Cat's claw | anti-inflammatory |
| Ellagic acid, rutin, gallic acid, ethyl gallate | Ailanthus altissima | various |
| Coronaridine, voacangine, ibogamine, ibogaine, tabernanthine | Voacanga africana, Tabernanthe iboga | neuroimmunologic modulator |
| Lapachol, quercetin | Pau D'Arco | therapeutic naphthoquinone |
| Icariin | Eucommia | PDE5 inhibitor |
| Baicalin | Oroxylum indicum | prolyl endopeptidase inhibitor |
| Frankincense, incensole | Boswellia sacra, Boswellia | incensole is a TRPV3 agonist |
| QS21 | Quillaja saponaria | potential immunologic adjuvant |
| Sandalwood oil, α-Santalol, β-Santalol | Sandalwood | Ayurvedic component |
| Bergenin, α-viniferin, ε-viniferin, diptoindonesin A | Bergenia ligulata, Dryobalanops aromatica, Mallotus japonicus | component of Ayurvedic medicine "Paashaanbhed" |
| Phenolic lactones | Caesalpinia paraguariensis | component of Bolivian traditional medicine |
| Erythravine | Erythrina mulungu | Brazilian medicinal plant |
| Antimicrobial, anti-inflammatory compounds | Psidium guajava | component of traditional medicine |
| Perfume resin | Agarwood / Oud Wood | aromatherapy |
| Opopanax, balsam, bdellium, bisabol | Myrrh | component of Eastern-Mediterranean, Middle-Eastern, and North-African, traditional medicine |
| Rotenoids, piscidone | Jamaican dogwood | component of Caribbean traditional medicine |