They were a staple on cable news for years.
They're gone now because last year the FDA pulled the drug from the market due to cancer risks.
Lookup how many FDA approved drugs were later pulled from the market due to side effects that had been previously unknown.
Years ago I read about some medical studies — there’s no real way to determine how a drug’s efficacy decreases over time. The conclusion they came to was that expiration dates were largely guesses. That year old “expired” Zantac or Advil or whatever you have in your cabinet, they’re probably just fine.