To learn how to choose the best vitamins, first check out this article from Dr. Weil.
Then go to Whole Foods or another natural health food or major grocery store and buy a small bottle of multivitamins for your gender until you find one that you like (e.g., doesn’t make you nauseated or give you an upset stomach, etc.), then when you find the best one, order it in larger quantity online. I buy the Nordic Naturals brand… they test their product extensively.
The Ivy Box 