You could also consider two multivitamins that are USP Verified to ensure that the amount of an ingredient that's stated on the label is in the bottle. USP Verified products are also safety-tested.

USP verified indicates that a product has been verified for purity, strength, safety, dissolvability, and manufacturing quality by the USP, an independent standards-setting authority for the drug ...

Oddly, that was one of few tested products labeled "USP Verified," which indicates that the USP has tested and verified the claimed ingredients, potency, and manufacturing process. Bottom line.

Unique Selling Proposition (USP) Definition: The factor or consideration presented by a seller as the reason that one product or service is different from and better than that of the competition ...