I cannot get my BP to stabilise, it is up and down like a yo-yo. My readings are from 150 to 120 over 50 to 80. I was told 140 over 80 and also 120 over 80. I am 65 and have a mechanical heart valve, 15 weeks, and take Ferosemide 40mg, Warfarin 5mg and 10mg of atorvastatin. It would be...