As drugmakers pushed back against rising criticism over sky-high U.S. prescription drug prices, one pharmaceutical company went public with a pledge.

Brent Saunders, CEO of Botox maker Allergan PLC, last September announced a new “social contract” under which the company would limit annual ...

TRENTON, N.J. (AP) — Drugmaker Pfizer Inc. is continuing its shopping spree with its fourth acquisition since the April collapse of its planned $160 billion megadeal to buy rival Allergan PLC and move its headquarters, on paper, to Allergan’s base in lower-tax Ireland.

Rising sales of Pfizer Inc.’s key new medicines and prospects that more drugs will be approved soon have analysts speculating the biggest U.S. drugmaker won’t break up after all.

For five years, the maker of Viagra and fibromyalgia and pain treatment Lyrica has been mulling a split up ...