UNIFORM CONTROLLED SUBSTANCES – Amends existing law to revise provisions regarding controlled substances.

Idaho's H 777 updates the state's controlled substances laws by adding specific fentanyl variants (like acetyl fentanyl, beta-methyl fentanyl, and 3-methylthiofentanyl) to Schedule I, the highest control category. It also broadens the definition of "fentanyl-related substances" to include any structurally similar compounds, covering new analogs not explicitly listed. This directly affects pharmacies, hospitals, and law enforcement by requiring stricter handling, registration, and record-keeping for these substances. The bill also makes technical corrections to provisions on drug prescriptions, storage, and disciplinary actions related to controlled substances.