Barlowe's uses the finest quality herbal extracts from the highest quality GMP certified extraction companies. All bulk herbal extracts received are tested for identity by a third party testing lab. The capsules utilized for our products are the highest quality clear veggie-caps. We encapsulate the herbals with slow speed equipment so that we do not have to use stearates, silicates, cellulose, or other flow agents. This yields a totally excipient and adulterant free product. Finally, we bottle the capsules in glass, ensuring a BPH free product. All products are subsequently stored in a heavily air conditioned storage room until they are ready to be shipped to the customer.