We built Stack because we were tired of guessing

Supplements shouldn't be one-size-fits-all. Yet the industry has spent decades selling generic multivitamins — broad-spectrum pills designed for no one in particular. You take them hoping something sticks. That's not health optimization. That's a coin flip.

The problem with generic multivitamins is simple: your body isn't generic. Your nutrient needs depend on your diet, lifestyle, health goals, genetics, and what's actually happening in your bloodstream. A 25-year-old marathon runner and a 50-year-old desk worker shouldn't be taking the same thing.

Stack takes a different approach. We start with a detailed health assessment — a quiz that maps your goals, lifestyle, diet, and health history. From that data, our AI builds a supplement stack tailored specifically to you. Not a category. Not a persona. You.

For those who want to go deeper, we offer optional blood testing through our partnership with SiPhox Health. A simple at-home test measures key biomarkers, and we use that data to refine your stack with clinical precision.

And we do it all transparently. Every ingredient, every dose, every source is published openly. Every batch is third-party lab tested for purity, potency, and heavy metals. No proprietary blends. No mystery formulas. You deserve to know exactly what you're putting in your body.