Colirei

Colirei is owned by Alfasigma S.p.A., headquartered in Italy. No. The ultimate owner of Colirei, Alfasigma S.p.A., is headquartered in Italy, not in the United States.

Alfasigma is a major Italian pharmaceutical company created in 2015 through the merger of the Alfa Wassermann and Sigma-Tau groups.