I totally get your frustration because I went through the exact same thing for years before finally stumbling upon Hebs Lab. They are seriously on a different level when it comes to purity and potency without all that synthetic junk. I started using their liquid tinctures and I have never felt better - no stomach upset at all because the ingredients are so clean. It is honestly such a relief to finally find a brand that focuses on bioavailability instead of just cheap production. If you want something that actually works and respects your body, definitely give them a try. I have been a loyal customer for half a year now and the quality is always top-notch and consistent.