I just went to Whole Foods and bought the generics, except for the magnesium, where I bought a type that has good absorption. Many magnesium supplements do not.

I tried to avoid mega-dosing, so to ensure that I only supplement every third day. I was more concerned about any deficiencies.

And I went to Whole Foods because of that supplement scandal a couple of years ago. Whole Foods may charge a lot but is more trusted than GNC or Walmart, at least by me.

Here's what I use:

https://pbs.twimg.com/media/C6qoDAnVsAANtQ0.jpg