In the United States, dietary supplements carry a Supplement Facts panel. Knowing how to read it makes it easier to compare products and see exactly what you are buying. Serving size comes first Every amount on the panel is per serving, so start there. A serving could be one scoop, two capsules or one stick.

A certificate of analysis, or COA, is a document from a testing laboratory that reports what was tested in a specific production batch and what the results were. It can look technical at first, but a few sections tell you most of what you need to know. Start with the batch number A COA applies