Protect What
Matters.
Premium dietary supplements built on clinically-studied, bioavailable ingredient forms. Three foundational formulas. No compromises.
Branded Ingredients
Ferrochel®, TRAACS® — patented, clinically-studied forms with published absorption data.
Third-Party Tested
Every batch tested for identity, potency, purity, heavy metals, and microbials.
Clean Formulas
Vegetarian capsules. No titanium dioxide, no fillers, no proprietary blends.
Three foundations.
The form matters more than the dose.
Most supplement brands compete on milligrams — bigger numbers on the label, regardless of how much your body actually absorbs. ROOK takes a different approach: we start with the bioavailable form and dose it at clinically-studied levels.
Every ROOK formula uses patented, branded ingredient forms with published absorption data. Ferrochel® iron absorbs through amino acid pathways. TRAACS® magnesium bypasses the GI issues of cheaper forms. Free-form glycine reaches peak plasma levels in under an hour.
Read the ScienceIngredient intelligence.
FAQ
Named for the piece that protects the Queen & King.
In chess, the rook is the foundation of every endgame. It moves with power and precision — never diagonal, never erratic. It holds the line. It protects the most important players on the board.
ROOK supplements are built the same way: foundational nutrients, delivered in their most effective forms, protecting the people who matter most. Your health is the foundation everything else is built on.
Our Story