Synopsis

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
Response Date	Nov 13, 2026 12:00:00 AM EST
Posting Date	Dec 02, 2024 12:00:00 AM EST
Archive Date	Dec 19, 2026 12:00:00 AM EST
Award Ceiling	1,050,000
Award Floor	N/a
Cost Sharing	No

Eligibility

Eligible Applicants

Small businesses, For profit organizations other than small businesses, Independent school districts, Public and State controlled institutions of higher education, City or township governments, Public housing authorities/Indian housing authorities, Special district governments, County governments, Others (see text field entitled "Additional Information on Eligibility" for clarification), Nonprofits having a 501(c)(3) status with the IRS, other than institutions of higher education, State governments, Private institutions of higher education, Native American tribal governments (Federally recognized), Native American tribal organizations (other than Federally recognized tribal governments), Nonprofits that do not have a 501(c)(3) status with the IRS, other than institutions of higher education

Additional Info on 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.

Additional Information

Agency Name	National Institutes of Health
Link to Additional Information:	https://grants.nih.gov/grants/guide/pa-files/PAR-25-270.html
Grantor Contact Information:	If you have difficulty accessing the full announcement electronically, please contact: GrantSolutions Help Desk Phone: 301-402-2541

CFDA Program(s)

• 93.213: Research and Training in Complementary and Integrative Health