This Notice of Funding Opportunity (NOFO) encourages Small Business Technology Transfer (STTR) grant applications from small business concerns (SBCs) proposing research projects directed towards commercialization for the development of novel, evidence-based, FDA-regulated medical products addressing the needs of patients suffering from opioid use disorders (OUD) and/or stimulant use disorders (StUD). Applications received under this NOFO may fall within two scientific areas, namely: (1) pharmacotherapeutics (small molecules and biologics)and (2) medical therapeutic and diagnostic devices, including software as a medical device. This NOFO strives to contribute to the effort against the national opioid and psychostimulant emergency and offer new medical products for individuals, families, and communities affected by this devastating crisis. Small business companies that developed currently marketed technologies or are developing technologies for different indications and are interested in demonstrating that their FDA-regulated product has a potential application in the OUD/StUD space are encouraged to apply.