I use Barclean's Fish Oil without after taste. I find it at my Health food store. I took it for the Omegas but found out my psoriasis was helped greatly.
I take Chromium GTF and Biotin to keep my blood sugar from fluctuating to extremes.
I take a Cranberry capsule to ward off UTIs
When I stopped taking any of these supplements in the past, the symptoms returned, so that's how I feel they are working. I have taken some other things, but when I don't see a result, I quit.
I also occasionally take a Geritol multi.