Medicare Part D is an optional program to help people enrolled in the federal health program pay for prescription drugs. With annual expenses running to about $100 billion last year, it is the dominant insurer in the U.S. pharmaceutical market.

Several studies published in recent years have examined the scope of telemedicine use within the addiction treatment field as well as outcomes related to specific telemedicine interventions and patient groups.

Three investigative journalists offer tips on how reporters should approach newsroom collaborations and how these partnerships can be more effective.

Over two million U.S. adults with cardiovascular disease have smoked marijuana, and the substance may carry increased cardiovascular risks.

A federal government database of doctors who provide medication-assisted treatment for opioid use disorder is rife with inaccurate contact information, research shows.

Research shows the extent to which doctors, nurse practitioners and physician assistants across the nation have oversupplied patients with opioids, spurring a national crisis.

Research for the first time shows a causal link between combat exposure and prescription painkiller misuse.

A recent study challenges the role that legalizing medical marijuana might play in easing the opioid epidemic.

Money and illegal drugs are inextricable. This roundup brings together recent research exploring the wide-ranging relationship between economics and drugs.

Benzodiazepine prescriptions are on the rise. We explain the anti-anxiety drugs' potential for abuse, addiction and overdose.