Give Back Health Clinic Collection Zinc Picolinate is manufactured and tested in TGA-registered GMP facilities here in Australia, ensuring high standards of quality, safety and efficacy. Every product, every batch, with no exceptions. This means the included ingredients are what they claim to be and the products are therefore more likely to have an actual therapeutic impact. This process also prevents counterfeit and adulterated materials from entering the market. While it adds significantly to our costs, we believe this level of integrity should be the industry standard. Please note that we absorb the extra expense ourselves; it is not passed on to you.