Hi, could you tell me if it s safe to take vitamin B12 with venlafaxine? I am on 375 mg daily for chronic depression. I have very low blood pressure when I stand up, it makes me feel sick and dizzy and faint. I am a vegetarian. I recently lost weight, but I think I eat healthily, salad, fruit, yogurt, veg and fish. Many thanks, Sue YYYY@YYYY