February 20, 2026

How Fast-Acting Products Actually Work with Harold Han, PhD

56 minutes

Dr. Riley Kirk welcomes Dr. Harold Han, Chief Science Officer and Co-Founder of Vertosa to explore the fascinating world of the science powering modern cannabis beverages and infused products. Known in

the industry as “The Happy Chemist,” Dr. Han explains how emulsion technology solves the classic oil-and-water problem that makes cannabinoids difficult to incorporate into drinks. The conversation breaks down how water-compatible cannabinoids are created, why droplet size and consistency matter for potency and onset, and how stability challenges differ between beverages and gummies.

They explore oxidation rates of major cannabinoids, packaging risks like

“scalping” from can liners, and new patented approaches to preserving potencyin infused drinks.

They also examine the full beverage development pipeline, from cannabinoids and infusion technology to formulation, manufacturing,

testing, and distribution, highlighting the many points where potency and

quality can be affected. Dr. Han clarifies the difference between nano and

micro emulsions, why most commercial cannabis drinks use nano systems, and how natural emulsifiers influence formulation choices. The discussion further explores how the human body processes emulsified cannabinoids, why food (especially fat) changes edible effects, and how fast-acting beverages work at a physiological level. They discuss new human research initiatives, patient applications such as consistent dosing without sugar or smoke, and how standardized emulsions could transform both clinical research and at-home use.

Looking ahead, Dr. Han shares insights on full-plant formulations, the future of cannabis as a precise delivery system for medicine, and the role of science-driven innovation in making cannabinoids more accessible, consistent, and scalable across recreational, wellness, and medical markets.

Chapters

00:00 Welcome + Meet Dr. Harold Hahn (“Happy Chemist”) & What Vert Does

00:52 From Cannabis Stigma to Conscious Living: Harold’s Personal Journey

02:18 The Oil-and-Water Problem: Emulsifiers Explained for Cannabis Drinks

04:13 Vert’s Water-Compatible Cannabinoids: Droplet Size, Consistency & Effects

09:48 Stability Deep Dive: Physical Separation, Oxidation Rates & Gummies vs Beverages

16:05 Packaging Pitfalls: Can Liners, “Scalping,” FTIR Testing & a New Patent Fix

22:49 Beverage R&D Checklist: The 7-Step Supply Chain + Taste/Mouthfeel Priorities

27:16 Flavor Wars: Tasteless THC vs “Tastes Like the Plant”

28:37 Nano vs Micro Emulsions Explained (It’s Not Just Size)

31:40 Why Most Cannabis Drinks Use Nano: Natural Emulsifiers

& Custom Control

34:38 Fast-Acting vs Slow-Acting: What Your Gut Does With

Emulsions

37:41 Food Effects + The New UCSF Cannabis Beverage PK Lab

40:32 Patient Benefits: Consistent Dosing, No Sugar, Full-Plant Medicine

44:23 Research, DIY Possibilities & Big-Picture Wrap-Up

Connect with Dr. Harold Han

LinkedIn: Harold Han Ph.D. (The Happy Chemist)

Company: Vertosa — https://vertosa.com/

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By Riley D. Kirk, Ph.D.

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