NCCIH Natural Product Early Phase Clinical Trial Award (R33 Clinical Trial Required)

National Institutes of Health

Funding

Estimated total program funding: $1,050,000

About

This Notice of Funding Opportunity (NOFO) encourages applications for investigator-initiated, early phase, clinical trials of natural products (i.e., botanicals, dietary supplements, and probiotics), which have a strong scientific premise to justify further clinical testing. For this NOFO, natural products include promising nutritional regimens that standardize the amount of a specific naturally occurring nutritional compound (e.g., omega-3 fatty acids, anthocyanidins, or polyphenols) and have compelling preliminary evidence. Under this NOFO, trials must be designed so that results, whether positive or negative, will provide information of high scientific utility and will support decisions about further development or testing of the natural product. This NOFO will provide up to 3 years support for studies to replicate the impact of the natural product on target engagement when used by humans, and assess whether there is an association between the degree of the impact on target engagement and functional or clinical outcomes in a patient population. Applications are encouraged to design studies to determine how to optimize the impact of the natural product on target engagement by optimizing the delivery of the natural product through examination of different doses or formulations. In addition, applications can be designed to combine the natural product with another treatment approach that is known to engage the same target; or study the impact of the natural product in a target population that is more responsive. Clinical trials submitted under this NOFO are expected to be hypothesis based, milestone-driven, and directly related to the research priorities and mission of NCCIH. This R33 funding mechanism is intended to accelerate the translation of emerging basic science findings about natural products into early-stage clinical testing to determine whether continued clinical research is warranted. This NOFO will not support efficacy or effectiveness trials, nor will

Eligibility

Other Eligible Applicants include the following: Alaska Native and Native Hawaiian Serving Institutions; Asian American Native American Pacific Islander Serving Institutions (AANAPISISs); Eligible Agencies of the Federal Government; Faith-based or Community-based Organizations; Hispanic-serving Institutions; Historically Black Colleges and Universities (HBCUs); Indian/Native American Tribal Governments (Other than Federally Recognized); Non-domestic (non-U.S.) Entities (Foreign Organizations); Regional Organizations; Tribally Controlled Colleges and Universities (TCCUs) ; U.S. Territory or Possession; Non-domestic (non-U.S.) Entities (Foreign Organizations) are not eligible to apply. Non-domestic (non-U.S.) components of U.S. Organizations are not eligible to apply.

Applicant types

Grants.gov eligibility code 00 Grants.gov eligibility code 01 Grants.gov eligibility code 02 Grants.gov eligibility code 04 Grants.gov eligibility code 05 Grants.gov eligibility code 06 Grants.gov eligibility code 07 Grants.gov eligibility code 08 Grants.gov eligibility code 11 Grants.gov eligibility code 12 Grants.gov eligibility code 13 Grants.gov eligibility code 20 Grants.gov eligibility code 22 Grants.gov eligibility code 23 Grants.gov eligibility code 25

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Notice-specific evidence check

What an applicant must verify for NCCIH Natural Product Early Phase Clinical Trial Award (R33 Clinical Trial Required)

Applicant evidence

Applicant type: State governments
Applicant type: County governments
Applicant type: City or township governments
Applicant type: Special district governments
Applicant type: Independent school districts
Applicant type: Public and state-controlled institutions of higher education
Applicant type: Federally recognized tribal governments
Applicant type: Public housing authorities and Indian housing authorities

Opportunity boundaries

Recorded funding: Estimated total program funding: $1,050,000
Recorded deadline: November 14, 2026; confirm time zone and submission system.
Recorded focus: Health

Before investing in an application, connect every eligibility claim, required registration, submission component and deadline to the current official notice. Open the recorded official source →

Application checklist

How to apply for NCCIH Natural Product Early Phase Clinical Trial Award (R33 Clinical Trial Required)

The steps below turn the recorded grant fields into a pre-submission check. They do not replace the current Notice of Funding Opportunity or its amendments.

Recorded eligibility

• Applicant types: Grants.gov eligibility code 00, Grants.gov eligibility code 01, Grants.gov eligibility code 02, Grants.gov eligibility code 04, Grants.gov eligibility code 05, Grants.gov eligibility code 06.
• Geographic scope is not structured in this record.
• Notice summary: Other Eligible Applicants include the following: Alaska Native and Native Hawaiian Serving Institutions; Asian American Native American Pacific Islander Serving Institutions (AANAPISISs); Eligible Agencies of the Federal Government; Faith-based or Community-based Organizations; Hispanic-serving Institutions; Historically Black Colleges and Universities (HBCUs); Indian/Native American Tribal Governments (Other than Federally Recognized); Non-domestic (non-U.S.) Entities (Foreign Organizations); Regional Organizations; Tribally Controlled Colleges and Universities (TCCUs) ; U.S. Territory or Possession; Non-domestic (non-U.S.) Entities (Foreign Organizations) are not eligible to apply. Non-domestic (non-U.S.) components of U.S. Organizations are not eligible to apply.

Focus areas: HL

Recorded deadline

November 13, 2026 — confirm the time zone and submission system

A missing or rolling date is not permission to assume an open application window.

1. Confirm fitMatch your applicant type, location, project scope and any cost-share or registration rule to the official notice.
2. Read the noticeCollect the current guidelines, amendments, budget rules, required attachments and submission instructions.
3. Check timingRecord the deadline time zone, internal review date and any earlier registration or portal cut-off.
4. Submit thereUse the official application route and save the confirmation or submission reference.

Official sources

Recorded source: https://www.grants.gov/xml-extract

Open official notice →

Last directory verification: Sep 13, 2026.