I Have Been On Losatan Potassium 100 Mugs For 2

I have been on Losatan potassium 100 mugs for 2 years. I have gained 30 Lbs I have joint pain and was diagnosed with RA. I really think this medicine has caused my joint pain and RA, no problems before it. Is there an alternative for high blood pressure that doesn't cause weight gain and joint pain that doesn't contain sulfa? I'm allergic to sulfa drugs. Thanks