Take special care with Thelin: • If you could get pregnant or are pregnant (please read the section “ Pregnancy and breast-feeding” below); • If you develop liver problems or symptoms that might relate to the liver (see ‘ Testing for liver problems’, below); • If you are taking or begin to take anticoagulants (e. g. warfarin, acenocoumarol, fenprocoumon or fluindione) to prevent blood clots.