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CLINICAL STUDIES for NATROL® PRODUCTS

As a science-forward VMS company, Natrol believes in clinical studies to back the effectiveness claims for all of our products. Please review the studies below and contact us if you have any questions.
Natrol® Cognium® clinical study results

Natrol Cognium®
Cognium contains silk protein hydrolysate which has been clinically shown to improve memory and recall in healthy adults. Researchers conducted multiple randomized, double-blind, placebo-controlled studies and published their findings in peer-reviewed journals. The studies can be found below. In these clinical studies, the silk protein hydrolysate in Cognium is referred to as either Brain Factor-7 or BF-7. †

Cognium Clinical Studies
  1. The Improvement of Short and Long-term Memory of Young Children by BF7. Kim, 2010
  2. The Effect of BF-7 on the Ischemia-Induced Learning and Memory Deficits, 2005
  3. Association Between Cerebral Blood Flow and Cognitive Improvement effect by B. mori Extracted Compound, 2004
  4. BF-7 Improved Memory Function and Protected Neurons from Oxidative Stress, 2004
  5. The Improvement of Learning and Memory Ability of Normal Persons by BF-7, 2004
  6. The Role of BF-7 on Enhancement of Memory and Cognitive Function, 2004
  7. The Role of BF-7 on Neuroprotection and Enhancement of Cognitive Function, 2004
Lutein Health Benefits

Natrol Skin, Hair & Nails®
A well-rounded beauty supplement for glowing skin, Natrol Skin, Hair & Nails includes clinical-strength lutein, an antioxidant that helps hair and nails to grow stronger. When taken daily, lutein has been clinically shown to improve skin elasticity and hydration to help keep skin looking younger longer. Lutein clinical studies are provided for review. †

Lutein Clinical Studies
  1. Kemin Reports Strong Evidence of Lutein’s Skin Health Benefits, 2007
  2. Beneficial Long-Term Effects of Combined Oral/Topical Antioxidant Treatment with the Carotenoids Lutein and Zeaxanthin on Human Skin, 2007
Natrol® CurcuWIN® clinical study results

Natrol Extra Strength Turmeric
A powerful supplement, Natrol® Extra Strength Turmeric supports a normal healthy inflammation response as well as cellular, heart and joint health. Most commercially available forms of turmeric are not readily absorbed by the body and require large doses to be effective.

Natrol Extra Strength Turmeric features CurcuWIN®, a proprietary form of curcumin that has been clinically shown to increase absorption and retention in the body. A clinical side-by-side comparison showed CurcuWIN increases absorption of curcuminoids 46x over 95% standardized curcumin. †

CurcuWIN® Clinical Study
  1. Comparative Absorption of Curcumin Formulations, 2014
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   † These statements have not been evaluated by the Food and Drug Administration. These products are not intended to diagnose, treat, cure or prevent any disease.