Highly rated multivitamins are available from Kirkland Signature, Equate and Centrum, according to Consumer Reports. Factors that influence the rating of a vitamin include cost, certification, and how well the vitamin dissolves in the digestive system.
Kirkland vitamins are verified by the U.S. Pharmacopeial Convention notes Consumer Reports. This verification emphasizes best practices and quality management in the manufacturing of drug products. Manufacturers and researchers develop multivitamins to offer specific percentages of the recommended daily intake for essential vitamins and minerals. When choosing a multivitamin, consumers should look for a combination of A, B, C, and D vitamins. Other minerals to note are zinc, calcium and magnesium, states WebMD.