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Botanical materials for applied research

Rare Botanicals. Researched Since 1997.

Carefully sourced botanical raw materials for researchers and formulators. Every available lot is evaluated with attention to identity, purity and consistency.

Since 1997Longstanding botanical research experience
Lot-Tested MaterialsIdentity, purity and consistency evaluated
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Oregon Residents!

Due to a new law concerning the heavy metal allowance in mitragyna products, we regret to inform you that we are not allowed to sell plain leaf or products containing plain leaf. We are currently seeking mitragyna products that comply with these regulations, but it is not a simple or rapid process. Please consider our signature extracts as an alternative, as they do not contain heavy metals in quantities exceeding the limits mandated by this new law.

Robert Montgomery examining botanical leaves in Thailand in 1994
Robert Montgomery, circa 1994 in Thailand

Herb Research Foundation

A Legacy of Botanical Research

HRF has studied mitragyna since 1997 and worked closely with Robert Montgomery of Botanical Preservation Corp and Of The Jungle, who helped introduce mitragyna to the United States market in 1995. That history informs our emphasis on careful sourcing, evaluation and responsible distribution.

Careful Sourcing

We work with suppliers who share our standards.

Laboratory Screening

Available lots are evaluated for identity, purity and consistency.

Responsible Distribution

Orders follow applicable laws and shipping restrictions.

How We Evaluate Materials

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Informational resources

Learn Before You Buy

Understanding Botanical Extracts

A practical introduction to extracts, standardization and product formats.

Explore the library

Our Testing & Quality Process

Read how identity, purity and consistency inform our review process.

Review our standards

Shipping Restrictions & Policies

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Quick help

Frequently Asked Questions

Where can I review shipping restrictions?

Review Shipping & Returns and Conditions of Use before ordering. Availability depends on the destination and current law.

How are botanical materials evaluated?

Our published process emphasizes careful sourcing, laboratory screening and responsible distribution.

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