National Institute on Drug Abuse - https://nida.nih.gov

United States Drug Enforcement Agency - DEA - https://www.dea.gov/drug-information

Drugs.com - Pill Identifier - Interaction Checker - https://www.drugs.com

Wiki - List of Famous Deaths from overdose - https://en.wikipedia.org/wiki/List_of_deaths_from_drug_overdose_and_intoxication