New Colorado law: ibogaine pilot and natural medicine ad limits

What does HB26-1325 do?

HB26-1325, "Concerning natural medicine," was signed by Gov. Jared Polis on June 4, 2026. The legislature's final fiscal note says it "takes effect on August 12, 2026, assuming no referendum petition is filed."¹¹⁰ Its prime sponsors were Reps. Jarvis Caldwell and Lisa Feret and Sens. Matt Ball and Rod Pelton, and the House concurred in Senate amendments on May 13.²

The main new program is an ibogaine research pilot in the state Behavioral Health Administration; it may approve up to five pilot sites on a review committee's recommendations. Most of that section takes effect only after the agency receives 150,000 dollars in gifts, grants or donations, plus federal approval.¹ Westword reports the money must arrive before January 1, 2028.¹⁰

The bill also limits facilitators' malpractice liability to injuries caused by "intentional misconduct, gross negligence, or a deviation from the standards of practice," and lets the Department of Revenue set different application fees by type of natural medicine.¹

What does it say about advertising?

According to the fiscal note, the bill "clarifies that state law does not permit a person to":¹

• "advertise natural medicine or natural medicine products";
• "advertise bona fide harm reduction services or support services, unless the process falls under the definition of personal use"; or
• "use harm reduction services or support services to conduct sales of natural medicines."

The fiscal note frames this as a clarification of existing law. It travels with a rewrite of the personal-use definition in Section 8, which Westword says bars selling services that involve transferring natural medicine, online sales and recurring fees to acquire it.¹⁰

What is the limited sales license?

The bill creates "the limited regulated natural medicine sales license," which lets licensees "co-locate within a healing center to sell natural medicine to individuals taking part in an administration session." The Department of Revenue sets its rules and fees.¹ The fiscal note assumed about 20 applicants, half of the 40 healing center licensees at the time it was written.¹

Voters won't weigh in this year. A campaign called Voted to Share needed 124,238 valid signatures by August 11 to refer Section 8 to the ballot.¹¹ The 14 statewide measures certified for November don't include it.¹²

How many healing centers does Colorado have?

As of October 16, 2026, the state's Natural Medicine Division listed 47 approved healing center licenses, 11 standard and 36 micro.³ On January 30, 2026, the Department of Revenue's annual implementation report counted 34.⁴

The same report says healing centers voluntarily reported 109 participants served from August through December 2025, after the first administration sessions began in June 2025.⁴

Why does it matter in San Diego?

Colorado's regulated program serves people 21 and older through a preparation session, an administration session at a licensed healing center and an integration session.⁵ Nothing in HB26-1325 reaches someone at home in San Diego.

If you see an online pitch for Colorado "natural medicine" shipped to California, it doesn't fit the program. Colorado says advertising natural medicine isn't permitted, and mailing psilocybin to another person is federal distribution, with use of the mail a separate federal count.¹⁶⁷ Colorado's protections are state law only: psilocybin stays in Schedule I federally and in California.⁸⁹

Our guide to legal psilocybin access from California compares Colorado, Oregon and New Mexico. Our guide to California psilocybin penalties covers the law at home, and our table of legal psychedelic therapy costs in San Diego covers the options here.