Gut Book Resource Page
Enjoy these selected resources mentioned in and inspired by my book Herbal Gut Health.
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Gut Hub Page
Enjoy this webpage of free gut resources by me including videos, podcasts, blog posts, etc.
Comfrey Resources
- Kate’s Student Monograph on Comfrey which also includes Maria’s perspectives on comfrey and PA safety here.
- Comfrey Central, by Dorena Rode, last updated 2004, is loadedwith helpful, evidence-based, and minimally biased information on comfrey and PAs
- Case reports through 1992
- PAs in comfrey including charts of data on different parts and species – you will see that the quanties vary WIDELY plant to plant and that none of the common species can be assumed to be low/free of PAs, though leaves generally do have far fewer PAs than roots (they can still provide potentially toxic levels)
- Additional articles and studies: de la Foret, Easley, Dharmananda, Comfrey studies on PubMed, PAs on PubMed. Herbalist Paul Bergner also speaks widely on this, such as in this MedHerb article.
- Studies on PA-containing plant transfer via soil to other plants(note that the full text for these is harder to get, sometimes you can find them via Sci-Hub, but the links change often) Nowak and Selmar , these studies were more specifically on Senecio (a more toxic plant) but likely also occur with comfrey. While one study by Chmit (full text here) determined a lesser risk, the evidence they provided is less convincing – and odd that they list “comfrey” on the study title yet use a completely different and obscure plant (Lappula squarrosa) in the resarch trials. More nuanced research would be great to help clarify all of this further, ideally on the comfrey species we love and grow.
Remedy Making Tips, Blogs & Videos
Learn How to Make Double-Extraction Tincture – how I make reishi tincture.
Tincture Blog, Charts & Short Video
Safety & Herb-Drug Interaction Resources
Mosby’s Nursing Drug Reference and AHPA Botanical Safety Handbook (particularly the more updated electronic subscription) are two favorites.
Memorial Sloan Kettering Cancer Center Search About Herbs free website organized by herb.
HerbPedia’s CYP Overview Charts for CYP3A4 and CYP2D6
Dr. Eric Yarnell’s BotMed Rocks CYP450 Drug Interaction Website
Additional Odds & Ends
Guido Mase shares about Bitters (includes audio and great studies listed in “resources”), also see his book Wild Medicine Solution
Great Wood Betony monographs by Darcey Blue and Tammy Leseuer
jim mcdonald’s free online ramblings, articles, plant profiles, videos about herbs, as well as his plantain video.
My blog on Plant Identification 101 Tips and Resources
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