Methods of treatment which utilize co-administration of the oxidized lipid VB-201 with an additional therapeutically active agent are described herein. Methods of treating a cardiovascular disease are described herein, comprising co-administration of VB-201 and a statin to a subject who is not fully responsive to the statin, as well as methods of treating an inflammatory disease or disorder, comprising co-administration of VB-201 and glatiramer acetate. A pharmaceutical composition comprising VB-201, identified for use in combination with glatiramer acetate, is also described herein. Methods of determining a therapeutically effective amount of VB-201 in a subject and of determining a therapeutically effective amount of VB-201 for co-administration with an additional therapeutically active agent are also described. Novel unit dosage forms of VB-201 and methods utilizing same are also disclosed.