The three major U.S. pharmacy chains are removing versions of the heartburn drug Zantac from store shelves as health regulators investigate a probable carcinogen detected in the popular stomach drugs.

Medical cannabis producers have a five-year window to reap high prices for their products before supply floods the market.

A California congresswoman plans to hold a hearing in about a month to explore the national-security risks posed by China’s dominance of the U.S. pharmaceutical supply chain, escalating concerns raised by the Pentagon.

Global health regulators sounded a coordinated alarm about the possibility that a stomach drug taken by millions of people could be tainted with the same cancer-causing agent that has sparked a worldwide recall of blood-pressure pills.

Faced with a worsening epidemic of teenage vaping and a mysterious illness stalking users of cigarette alternatives, the Trump administration promised to ratchet up its oversight of a burgeoning but increasingly troubled industry.

A draft executive order would target foreign shippers routing deliveries through the U.S. Postal Service — not the two-largest U.S. couriers United Parcel Service Inc. and FedEx Corp.

A Chinese outbreak of African swine fever that has killed millions of pigs in the country has also led to falling U.S. supplies of a widely used drug derived from the animals, the anti-clotting drug heparin.

The die-off is highlighting questions about the ocean of pesticides used in the country’s agriculture and whether chemicals are washing through the human food supply — even as the government considers permitting more.