Materia Medica

Rhamnus cathartica (Common Buckthorn), realistic botanical photo
Common Buckthorn (Rhamnus cathartica) — Purging Buckthorn, Hart's Thorn
A safety- and law-focused guide to common buckthorn covering invasive ecology, historical cathartic use, gastrointestinal toxicity, Illinois legal restrictions, identification, and safe handling. Read more...
Hyssop (Hyssopus officinalis) — Garden Hyssop, Holy Herb
A guide to Hyssopus officinalis covering culinary and traditional use, respiratory folklore, essential-oil seizure risk, pregnancy cautions and symbolism. Read more...
Greater Celandine (Chelidonium majus) — Tetterwort, Swallowwort
A whole-plant guide to greater celandine covering identification, traditional use, yellow latex, research context, liver-injury risk, topical irritation, and safety. Read more...
Iceland Moss (Cetraria islandica) — Iceland Lichen, Icelandic Lichen
A guide to Cetraria islandica explaining why Iceland moss is a lichen, its food and throat-soothing traditions, preparation, evidence and source-quality safety. Read more...
Larrea tridentata (Chaparral / Creosote Bush), realistic botanical photo
Chaparral (Larrea tridentata) — Creosote Bush, Greasewood
A safety-focused whole-plant guide to chaparral covering desert-botany context, traditional use, NDGA research, serious liver toxicity, kidney concerns, and modern safety guidance. Read more...
Chondrus crispus (Irish Moss), realistic photo
Irish Moss (Chondrus crispus) — Carrageen, Carrageen Moss
A guide to Chondrus crispus covering Irish moss as red algae, traditional food use, carrageenan, variable iodine, thyroid caution and source quality. Read more...
Vitex agnus-castus chaste tree with palmate leaves, violet flower spikes and dark fruits
Chaste Tree (Vitex agnus-castus) — Vitex, Agnus Castus, Monk's Pepper
Chaste Tree / Vitex / Agnus Castus (Vitex agnus-castus) materia medica covering botanical identity, traditional menstrual use, standardized extract research for PMS, product-specific dosing, constituents, dopaminergic and hormonal cautions, adverse... Read more...
Jasmine (Jasminum officinale) — Common Jasmine, Poet's Jasmine
A guide to Jasminum officinale covering fragrant flower tradition, jasmine-tea species context, aromatherapy evidence, food-grade sourcing and safety. Read more...
Anthriscus cerefolium (Chervil), realistic botanical photo
Chervil (Anthriscus cerefolium) — Garden Chervil, French Parsley
A whole-plant guide to garden chervil covering identification, culinary use, traditional herbal context, research, and the important risk of confusing wild plants with poison hemlock. Read more...
Juniper (Juniperus communis) — Common Juniper, Juniper Berry
A guide to Juniperus communis covering juniper berry cones, culinary use, traditional urinary use, pregnancy and kidney cautions, and folklore. Read more...
Stellaria media (Chickweed), realistic botanical photo
Chickweed (Stellaria media) — Starweed, Satin Flower
A whole-plant guide to chickweed covering identification, edible-green use, traditional topical preparations, research context, saponins, allergy considerations, and safety. Read more...
Kava (Piper methysticum) — Kava Kava, Awa, Intoxicating Pepper
A careful guide to Piper methysticum covering Pacific kava tradition, root and rhizome preparation, anxiety research, sedation and rare severe liver injury. Read more...