About Us

PhytoRX was born from the expertise of Vertosa, a pioneer in advanced infusion technology with years of experience delivering precision and consistency for next-generation botanical therapeutics. Guided by the vision of Dr. Harold Han, our team brings together deep scientific knowledge, medical perspective, and a passion for helping people feel their best. Together, we’re building a platform that bridges the wisdom of nature with the rigor of science, so patients and physicians alike can trust what’s inside every bottle.

Harold Han, Ph.D.

Founder of phytoRX

A scientist specializing in colloids and delivery systems, Dr. Harold Han has dedicated his career to the art and science of nanoemulsions, transforming plant-derived active ingredients into stable, predictable and effective formulations.

Harold believes in the healing power of plant medicine but also recognizes its limitations need to be addressed. The motivation behind PhytoRX is to bring consistency and efficacy into the plant-based therapeutics.

Harold’s intention with phytoRX isn’t only technical, it’s personal, as he's witnessed the struggle patients have experienced trying to find plant-based medicine in dispensaries. PhytoRX is meant to give clinicians a tool they can confidently use, and to give patients an alternative path toward improving their health.

We extend our heartfelt gratitude to our network of trusted healthcare providers whose expertise and feedback have been invaluable throughout the development of PhytoRX. This includes, but is not limited to Dr. Jean Talleyrand, Dr. Neal H. Patel, and Nurse Maureen ‘Mo’ Smyth, whose guidance and continued support help us deliver effective, science-backed wellness solutions.