Does Stack use fillers?

At Phi, we prioritize minimizing "Other Ingredients" and exclude unnecessary fillers that might interfere with dissolution, absorption, or the overall effectiveness of our product. Every component in Stack, including any "Other Ingredients," is sourced from the purest, pharmaceutical grade materials available. We rigorously evaluate each ingredient, giving preference to those free from contaminants and that minimize allergens. Every ingredient in our product, whether active or inactive, is clearly listed on the label.