Yes, we can easily drown in the sea of supplements! I know, it's hard to keep them all straight and it's hard to afford them all. But here is a list of sources so if you aren't fortunate enough to live near a great health food store you can still get what you need. I have no affiliation with any of these companies other than as a shopper at a couple. I also don't hold any back because of bias. To each their own and it's up to you to decide for yourself.
I have found that many of the best supplement brands are either available through doctors, such as professional brands Metagenics, Thorne, ProActive BioProducts, etc. Personally I have analyzed some of my favorite botanicals, and generally find that the store brands are much less effective than when you buy the herbs over the Internet or in the doctor's office. Store brands have to sit in distributors warehouses, shipped all over in hot UPS trucks, etc, before they get placed on a shelf in the store.