GSK Pfizer

Lawsuits against the companies began piling up in both state and federal courts after the US Food and Drug Administration in 2020 asked manufacturers to pull Zantac off the market

Pfizer introduced Lipitor in 1997, and the drug drove more than $130 billion in sales during its first 14 years on the market

Pfizer is the world's fifth-largest player in consumer health with 2.5 percent of a market bolstered by ageing populations and growing interest in health and wellness