There are no significant quality differences between less expensive and more expensive vitamin-mineral supplements, with cost primarily correlating to dosage.

“I'm not aware of any real differences between the quality of the water soluble and fat soluble vitamins found in the less expensive versus the more expensive vitamin mineral supplements more typically the cost scales with the dosages of these different vitamins and minerals and as could probably be expected the more expensive to obtain and source vitamins and minerals tend to be in lower quantities in the less expensive versions of vitamin mineral supplements”