Longvida should be about as good as Meriva. I err on the side of Meriva because it has more clinical trials than any other brand. It also has the most stable blood levels, even if it doesn't peak as high.
Theracumin has the highest overall bioavailability. Longvida is the best for the neurological benefits of curcumin (which would make sense for you, given back pain and mood)
