Book a Class

Herbal Constituents Course (Early Access)
Registration is now open!

We're doing something new this year: opening up Early Access to Herbal Constituents. We've had a number of requests for this, so we decided to go for it and let enthusiastic students register now! Early Access allows you to view and download all the course materials and get a jump start on your studies before the new live webinars begin (Sept 5, 2024 for Semester 1, & Jan 9, 2025, for Semester 2). Each class in the early access version incudes a recorded 2.5-hour webinar with Lisa Ganora and Kat Martello, with full admin and class support via our lively Forum. Also, we're limiting total registrations to 100 each semester to make sure students get individual attention, so we wanted to give you a chance to sign up early.

The Art and Science of Botanical Tincturing course We compare classical maceration, power maceration, percolation & done-in-a-day tinctures using kitchen tools and home extractors. Learn how to make concentrated, consistent & potent products with optimal ethanol percentage & extraction ratios. Explore the principles of solubility and extraction that apply to tincturing. Dive into menstruum composition and learn the power of the Menstruum Math Calculator (included). Practice using the Dilution Equation & the Concentration Equation to make the perfect menstruum for fresh and dried herbs. What's the best menstruum, ratio & method for tincturing your favorite herbs? Come find out how many different options and answers there are to that question! Explore historical pharmacy methods of percolation and how to adapt them using modern equipment. Take your tincturing game to the next level with Herbal Constituents!

Our first Short Course, Comfrey & the PA Puzzle, is now available. Learn about the constituents in Comfrey including the details on pyrrolizidine alkaloids (PA), their toxicology & the safety of Comfrey as a traditional herbal medicine.

If you're interested in our Make Better Medicine course, Solubility & Extraction, for process based herbal pharmacy (the next step beyond the recipe based approach) click through for details. Our second Make Better Medicine course, Extraordinary Elixirs! (& Herbal Infused Honeys) is also available. This course shows you how to make concentrated infused honeys & potent, multi-tincture / multi-honey herbal elixirs. Elixir is the new syrup!


Get your copy of Herbal Constituents today!


Herbal Constituents presents the most important concepts and research on phytochemical compounds in medicinal foods and herbs.

Basic Language of Phytochemical Structure

In a clear, step-by-step fashion, the reader is first introduced to the basic language of phytochemical structure including bonding, polarity, functional groups, isomers, and more. This non-mathematical presentation distills the information that is important for understanding the personalities and activities of constituents in medicinal herbs.

Making Herbal Medicine:
Extraction, Solubility, Solvent Polarity & More

These chapters address areas of interest for the botanical practitioner including solubility and extraction of herbal constituents, polarity of solvents and solvent systems, and other influences on solubility, phytochemical stability, and reactivity in extracts. We also explore synergy and variability in herbs and formulas, and the role of standardization.

Herbal Constituent Categories

The book presents a detailed and thoroughly referenced chapter for each of the major categories. Each chapter contains numerous illustrations and explanations of the botanical occurrence and physiological activities of the constituents, and is based on up-to-date research considered in the context of traditional usage.

Extensive Illustrated Glossary

Herbal Constituents concludes with an extensive illustrated glossary having some 250 entries that will be helpful for those needing to review some of the most important concepts and terminology from organic chemistry, biochemistry and phytochemistry.

Meet the Author

Hi! I'm Lisa, author of Herbal Constituents. It's my pleasure to offer this updated and expanded 2nd edition to students and practitioners of botanical medicine.

More about Lisa

Join our email list

We'll send updates on the latest online course offerings, in-person herbal medicine workshops, live classes and free content ... we respect your privacy and never sell your information!


Join our mailing list

Receive updates on the latest online course offerings, in-person herbal medicine retreats and more.