Synopsis

This Notice of Funding Opportunity (NOFO) encourages applications for investigator-initiated mid-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. All applications submitted under this NOFO must be supported by sufficient preliminary data demonstrating bioavailability (if applicable) and documentation that the natural product produces a reproducible and measurable impact on target engagement (i.e., measure of the mechanism of action). Only in cases when it is not possible/practical to measure target engagement in the patient population of interest or when there is a fundamental understanding of the products mechanism of action will this preliminary data requirement be waived. Applications submitted to this NOFO should propose a mid-phase clinical trial to do the following: determine the optimal dose or formulation of a given natural product for use in a future multi-site efficacy trial; or determine which patient phenotypes will be responders versus non-responders to the natural product to inform inclusion/exclusion criteria of a future efficacy trial. 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 NOFO will not support single-site or multi-site efficacy or effectiveness trials, nor will it support trials to test natural products for the treatment or prevention of cancer. Applicants are encouraged to contact the appropriate NCCIH Scientific/Research contact for the area of science for which they are planning to develop an application prior to submitting to this NO
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	N/a
Award Floor	N/a
Cost Sharing	No

Eligibility

Eligible Applicants

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

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-25-271.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