I need some butterbur, and for fairly cheap. But I've always just bought herbs in bulk from my local store or grown/foraged my own, so I want to make sure I'm getting a decent-quality product. Any suggested brands/sources?
Nature's Sunshine spends a lot of their money testing their products and checking up on their producers to make sure what they're selling and what you think you're buying are the same thing.
Still, my advice for the long term would be to get some butter burr seed and grow your own if it's an herb you routinely use. THe quality of your own stuff will be vastly better than anything commercial.