I was diagnosed with mitral valve prolapse and regurgitation 6 months ago. I was prescribed beta blockers. And I was referred to psychiatrist also and he had prescribed me venlafaxine and valproate and clonazepam. I am still on these medicines still having pain in right chest, shivering, headache, giddiness, upset mind. My B 12 level is 1880. My weight was 52 at that time and no W its 70.