Teva worked the best but not being produced. Many brands of the generic made me dizzy and nauseous until I found the company Teva. Bad news, Teva stopped making the tablet and only makes the generic extended release and my insurance company doesn't cover it. They want $700 for a month supply. The tablets cost less than $10 for the same time period. Question: does anyone else have this issue. What brands work for you. My pharmacy's carry the brands taro, Unichem and Alembic. What are your experiences