Extra Nutrients has an upgraded multi profile plus the addition of several nutrients to support healthy aging and eye health. * Now with nicotinamide riboside (NR), more calcium and magnesium, MK7, twice the vitamin D, and more. Since 1984, Thorne has set the standard for the exceptional formulation and quality manufacturing of nutritional supplements. Thorne delivers premium, science-based products, a health diagnostics technology platform, and the latest in medical education. With more than 350 products, Thorne is the most dispensed brand by 30-40 year old health-care practitioners. Since 2012, Thorne has partnered with educational institutes and local charities to donate more than $1M in products and profits. Thorne products do not contain any unnecessary binders, coatings, disintegrants, fillers, or lubricants (including magnesium stearate) that could impair absorption. Thorne adheres to the FDA's current Good Manufacturing Practices (cGMPs) and has the highest number of NSF Certified for Sport products which tests for more than 200 banned substances for elite athletic competitions.