Best Multivitamins for Children in 2021

How Are the Scores Calculated?

Here is more detail on what goes into calculating each of the scores:

Composition

This metric represents how many of the 13 vitamins and 14 essential minerals are included in the product. Surprisingly, a number of products are missing key ingredients, such as iodine, chromium, and magnesium. We also consider the number of additional active ingredients because lesser-known nutrients, such as choline, inositol, and lycopene have well documented health benefits, but are typically not included in the more basic multivitamin formulations. We give extra credit to products that contain such beneficial compounds.

Potency

Our potency score has two components: the chemical form of the nutrient, as well as the total amount of each nutrient contained in one serving. Depending on the chemical form of the nutrients it uses, Product A can be several times more potent than Product B. For example, Magnesium Citrate contains 16.2 percent of elementary magnesium, while Magnesium Oxide contains 60.3 percent of elementary magnesium. A product containing magnesium in the Oxide chemical form would be 3.7 times more potent when it comes to that one nutrient than a product containing magnesium in the Citrate chemical form.

Bioavailability

Bioavailability is the portion of a given active ingredient that is capable of being absorbed through the intestinal membranes so it becomes available for use by the cells and organs of the body. A given nutrient can come in many different chemical forms and some of these forms may be more bioavailable than others. For example, a study by the University of Texas published in the Journal of Clinical Pharmacology showed that one common form of calcium, called Calcium Citrate, is 2.5 times more bioavailable than another popular form, called Calcium Carbonate. Based upon these findings, we've assigned a lower Bioavailability score to products containing Calcium Carbonate rather than other, more bioavailable forms of calcium.

Safety

When it comes to children's multivitamins, we put safety first. We prefer a less potent, but safer product, rather than a product packed in nutrients that are well in excess of the Recommended Daily Allowances (RDAs). The standards against we measure potency and safety of children's multivitamins are based on the RDAs for children four to eight years of age, as put forth by the Food and Nutrition Board of the National Research Council.

When determining the Safety scores, we look for two things:

1. Harmful additives. We analyze the list of ingredients to see if any artificial flavors, preservatives, coloring, sweeteners and binding agents are included. All such ingredients are then cross-referenced against an ingredient safety database to check for compounds with potential toxicity. Points are deducted from the Safety score of each product that includes substances with potential toxicity.

2. Risk of overdose. We cross-reference every single ingredient to make sure it falls within the safe Tolerable Upper Intake Levels (UL) for children as set out by the Food and Nutrition Board. Ingredients that exceed the UL get a deduction in their Safety rating. For example, the vitamin A UL for children aged four to eight is 3000 IU; however, quite a few products contain 5000 IU and higher. When children take multivitamins that exceed the UL for vitamin A, they can experience side effects, such as fatigue, nausea, and irritability. To avoid this risk, keep an eye on the Safety score of the product you are considering.

Overall Effectiveness

To calculate the Overall Effectiveness score of a given product, we take the average of the other four scores: composition, potency, bioavailability, and safety. For best results, we recommend choosing a multivitamin product that has an Overall Effectiveness score of 8.0 and above.