I am 56 years old and take 2 labetalol 100 mg each , hydrochlorothiazide 25 mg , venlafaxine 75 mg, simvastatin 10 mg. for colestrol 20 meq of potassium twice a day,cetirizine once a day, and vit. B-12 and cal. once a day. Can this pill cause me to have terrible hot flashes that the half my head can be soaking wet all day long and I can have the windows open at night and its 56 above and I m sweating and my body is shivering cold.What is wrong here?