Abstract: The invention relates to a pharmaceutically active substance for producing a drug that is capable of generating thrombin or that contains thrombin and compositions comprising thereof. The pharmaceutically active substance contains (A) prothrombin (coagulation factor II) obtained from plasma or by genetic engineering, (B) coagulation factors V, VIII, IX, X obtained from plasma or by genetic engineering that at least partially may be present in their activated state, and coagulation factor XIa obtained from plasma or by genetic engineering, and (C) prion-safe, coagulation-promoting phospholipids, where the phospholipids are optionally contained in liposomes.