How should shelf life be established for a private-label pet supplement?

Shelf life should be supported by a documented stability rationale or study for the final formula in the proposed packaging. The protocol should define storage conditions, time points, tested attributes and acceptance limits. Buyers should ask whether evidence is real-time, accelerated or bridged from a sufficiently comparable product, and what happens if the formula, flavour, dosage form or pack changes. A printed expiry or best-before date is the output of this assessment, not the evidence itself.