The National Institutes of Health (NIH) is inviting applications for the NCCIH Natural Product Mid Phase Clinical Trial (R01 Clinical Trial Required) grant, aimed at supporting mid-phase clinical trials of natural products such as botanicals and dietary supplements. The objective is to evaluate optimal doses, formulations, and patient responses, with a requirement for preliminary data demonstrating bioavailability and measurable target engagement. This funding opportunity is crucial for advancing research in natural products, particularly in areas like symptom management and minority health, while excluding trials focused on cancer treatment. Applicants can request up to $350,000 annually for a maximum project period of five years, with the submission deadline set for November 13, 2026. For further inquiries, interested parties can contact NIH Grants Information at grantsinfo@nih.gov or visit the additional information link at http://grants.nih.gov/grants/guide/pa-files/PAR-24-115.html.