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Nutrient Formulas Carlson offers the letter vitamins on their own or combined for a health benefit boost. Forms for the whole family We offer vitamins A – K for all ages. Choose from liquids, gummies, soft gels, tablets, or capsules. Tested for Potency Carlson vitamins A – K are tested by an FDA-registered lab for potency and quality. Founded with Vitamin E Carlson was founded with a single vitamin E formula and now offers a full line of nutritional supplements. Carlson began in Chicago in 1965....