HB-5 is formulated under the state-of-the-art-of-facility. To further ensure its purity, every batch is checked by a third-party laboratory.Every bottle of HB-5 is made under strict conditions in the USA. All the ingredients mentioned above are herbal and extracted from organic sources. HB-5 is formulated under the state-of-the-art-of-facility. To further ensure its purity, every batch is checked by a third-party laboratory.