Pharmaceutical services company Patheon announced Monday that it is acquiring Banner Pharmacaps, a High Point-based supplier of gel tabs to the pharmaceutical industry, for $255 million.

Patheon, which shifted its headquarters to Research Triangle Park from Toronto in 2008, is acquiring Banner from the Dutch company VION N.V.

Patheon manufactures prescription drugs and provides other services, such as developing the formulation of experimental drugs. Banner has a manufacturing facility in Mexico.

Patheon has 4,700 employees worldwide, including about 70 in RTP.  About 600 of Banner's 1,200 employees are based in High Point.