At ZOSI, we believe quality and transparency come first. Let us prove it.

Our products are physician-formulated and crafted with high-quality, ethically sourced ingredients. Safety and quality control in every step of our operation is essential. We manufacture our products according to the FDA’s guidelines for cGMP (Current Good Manufacturing Practices). To ensure and verify consistency and safety, we test all of our ingredients, and each unique batch of a finished product, for purity and potency at an accredited 3rd party lab.

At ZOSI, you are in good hands.

But don’t just take our word for it; see for yourself. We exceed the industry standard by providing transparency to our product testing – posted right here on our website! Each product label contains a unique batch/lot number. Reference the list below, find your batch/lot number, and click on the link to review your product’s 3rd party Certificate of Analysis.