The present invention generally relates to the field of bone substitute materials, and particularly to a bone substitute material that is bioactivated. More specifically, the present invention relates to a particular agent comprising citrate, citric acid, monobasic sodium phosphate, dextrose, and adenine for use in improving or promoting osseointegration of a bone substitute material, to a bone substitute material provided with a coating of said particular agent, and to a kit for use in a method of installing a bone substitute material comprising a bone substitute material as well as citrate, citric acid, monobasic sodium phosphate, dextrose, and adenine.