BeTobaccoFree.gov - U.S. Department of Health and Human Services (HHS)
Provides user-friendly information from the U.S. Department of Health and Human Services (HHS) about tobacco products and the health effects of tobacco use, as well as resources for quitting and tobacco use prevention.
National Institute on Drug Abuse (NIDA) (NIH) - U.S. Department of Health and Human Services, National Institutes of Health, National Institute on Drug Abuse (HHS, NIH, NIDA)
Also part of the NIH, NIDA is a research institute with a mission, according to its website, "to lead the nation in bringing the power of science to bear on drug abuse and addiction." It aims to support research to prevent drug misuse and addiction, to provide clinical treatment for drug misuse, and to mitigate the effect of drug misuse and addiction. It also provides facts and research reports, newsletters, and drug addiction and clinical practice journals for researchers and health care providers.