Vitamin E comes in many different forms, each of which has important benefits in cellular function. In its natural form, the most common type of vitamin E is d-alpha tocopherol; synthetic vitamin E, which is most commonly found in supplements as d/l-alpha tocopherol, is only half as effective as the natural form. Another form of vitamin E, gamma tocopherol, possesses distinctive chemical properties that differentiate it from alpha tocopherol. Studies show that gamma tocopherol reduces chronic inflammation and protects against cancers of the colon and prostate better than alpha tocopherol. This criterion assesses the product for the various forms of vitamin E and their bioactivity.
Does the product contain the natural (d) isomer of alpha tocopherol or does the product contain the less useful synthetic form of alpha tocopherol? Does the product contain gamma tocopherol (or a mixture of gamma, beta, and delta tocopherols) at a potency of up to one-half the potency of alpha tocopherol in the same product? What is the potency of gamma tocopherol or mixed tocopherols in the product, compared to the potency for gamma tocopherol in the Blended Standard?
NutriSearch Corporation is a Canadian company specializing in nutrition and health research, focussed primarily on multiple vitamin and mineral supplementation.
Our main product is the NutriSearch Comparative Guide to Nutritional Supplements™, which examines current research on the health benefits of supplementation for prevention of degenerative disease. The guide also includes comparisons of broad-spectrum supplements available in various markets around the world, is available in various regions. The guide for the Americas includes product comparisons from Canada, Colombia, México, and the United States. We also publish a guide for Australia and New Zealand.
NutriSearch is also available as a consultant to nutritional supplement manufacturers wanting to improve their supplements.