How much melatonin is in your melatonin gummy?

Researchers purchased 25 different melatonin gummy products from retail stores.
22 of the products (88%) didn’t contain the amount of melatonin claimed on the label.
One had NO detectable melatonin.
One had over 3 times as much melatonin as claimed.
How to find reputable melatonin products (or any type of supplements): go to an independent health food store for guidance.