The world's second-largest drugmaker says its Xeljanz has been approved in Russia, Argentina, Kuwait, the United Arab Emirates and Switzerland, the first European country to allow sales.
Meanwhile, New York-based Pfizer is asking advisers to European Union medical regulators to reconsider their recommendation not to approve the drug.
The advisers said Xeljanz didn't control progression of the immune disorder enough to outweigh serious side effects seen in some patients. Those include blood and other cancers, perforated intestines, tuberculosis and other infections, decreased infection-fighting cells, headaches and diarrhea.
Xeljanz, the first in a new class of drugs, was launched in the U.S. in November. It has been heavily advertised.
MORE HBJ HEADLINES
Watchdog: Too few air traffic controllers where needed most A $32B tally, but Boeing's 787 costs don't bother Wall Street Czech airline to buy 16 Boeing 737 Max jets Lockheed Martin separating unit, combining it with Leidos Apple forecasts rare sales drop Obama administration loosens Cuba embargo with new measures