ADB-4en-PINACA is classified as a synthetic cannabinoid. Synthetic cannabinoids have been reported to cause psychoactive effects similar to delta-9-tetrahydrocannabinol (THC). Synthetic cannabinoids have caused adverse events, including deaths.
MDMB-4en-PINACA and ADB-PINACA are structurally similar synthetic cannabinoids. ADB-PINACA is a Schedule I substance in the United States; ADB-4en-PINACA and MDMB-4en-PINACA are not explicitly scheduled.