Any larger health food store should carry all these items. Whole Foods Markets (in So. Cal...in No. Cal too?) also do. Per Prevention Magazine, Nature's Way and Nature's Herbs are two of the most reputable brands out there, directly supplying alternative med clinics/practitioners, and are also two of the most popular brands. But there's other good brands as well. Be aware that Wormwood shouldn't be taken long-term, or for more than 3-4 weeks per one book I have.