1. Ingredient transparency
Start with the current label or official product disclosure. Identify the ingredients and stated amounts where available.
2. Melatonin amount
If melatonin is included, compare the stated amount rather than assuming all products use equivalent servings. Individual needs and responses vary.
3. Delivery format
Drops, capsules, gummies and powders can differ in convenience and dosing. Format by itself does not establish superior effectiveness.
4. Claims versus evidence
Research involving an individual ingredient can provide context, but it does not automatically demonstrate that a finished multi-ingredient product produces the same outcome.
5. Full purchase cost
Compare total order cost, quantity, shipping, recurring billing if applicable and price per unit—not just a highlighted per-bottle number.
6. Refund conditions
Read the current return terms, deadlines and procedures. A guarantee headline is not a substitute for reviewing the actual conditions.
Apply the framework
Our Yu Sleep analysis uses these criteria to examine a current liquid sleep-support product.
Read Yu Sleep Review