The present invention relates to a pharmaceutical composition comprising a non-viable cell lysate and at least one antiflocculant and/or antisedimentation agent(s). The pharmaceutical composition of the present invention comprising the cell lysate is in the form of a solution or a suspension or a lyophilisate, in particular, the homogenized cell lysate compositions are in the form of solutions or suspensions or lyophilisates. The present invention further discloses processes for the production and the use of the pharmaceutical composition.