Whole Herbs: At Whole Herbs, We perform a full spectrum of microbiological lab testing and purity analysis to ensure no presence of chemicals, heavy metals or pesticides. We also test profiles for all kratom products, to ensure the highest quality. You will find great value and high quality all in one product. 100% Organic and Non-GMO Premium Maeng Da Kratom Capsules. Whole Herbs is one of the most preferred brand in the market. Mitragyna Speciosa is indigenous to Thailand, Indonesia, Malaysia, Myanmar, and Papua New Guinea.