My aunt, who is eighthy yrs old and always in good health, was prescribed Amlodipine for HBP (usually around 140's/high 80's). Started @ 2.5mg/day then increased to 5mg 2x/day. Past 2 wks can only urinate @ a trickle, no pain but severe dizziness and sometime nausea, 1x with vomit clear fluids. BP still high... sometimes higher than usual numbers as above.