My fiance is currently taking Lisinopril, Metaprolol, and Colonadine, for high blood pressure. He is also taking Gabapentin for nerve pain. Since the Metaprolol and the Colonadine has been added his blood pressure has ranged anywhere from 220/120 to 183/113. What other things could be causing his high BP. We are at a loss. His dr just keeps adding meds and it is not working.