Natrol(R) Ranked Top Selling Brand in Specialty Dietary Supplements: Melatonin, Ester-C(R), DHEA and 5-HTP.

CHATSWORTH, Calif. -- Natrol, Inc. (NASDAQ:NTOL), a leading manufacturer and distributor of nationally branded nutritional products, is the top selling brand of melatonin, Ester-C, DHEA and 5-HTP in U.S. drug stores, according to Information Resources Inc.'s (IRI) 52-week InfoScan tracking dollar sales data gathered through April 16, 2006. IRI is a global provider of enterprise market information solutions for the consumer packaged goods, retail, and healthcare industries.

"We are pleased with our company's performance in the dietary supplements market as it is represented in the latest IRI data," said Wayne Bos, President and Chief Executive Officer, Natrol, Inc. "These top rankings directly reflect the success of the Natrol brand and the quality of our products. As consumers strive for healthier lives, they are demonstrating their choice in purchasing Natrol brand products."

Natrol brand melatonin products accounted for more than one-third of melatonin category sales in the past year. The body naturally releases melatonin in response to changes in light, with melatonin levels rising at night. The Natrol brand offers a full line of melatonin products to help promote healthy sleep patterns(a).

Natrol 5-HTP products, which represent 89% share of market, promote balanced serotonin levels to help enhance mood and control appetite(a).

Natrol DHEA products have successfully captured more than 77% of the market. Found naturally in the body, DHEA usually reaches peak levels in early adulthood, then steadily decreases as we age(a).

In addition, Natrol has secured one-quarter of the Ester-C market. Natrol Ester-C is a unique form of Vitamin C containing naturally occurring metabolites. It uses a patented manufacturing process to neutralize the pH, making Ester-C gentle on the digestive system(a).

Natrol consistently employs high GMP (Good Manufacturing Practice) standards and rigorous Quality Assurance practices. Natrol melatonin, Ester-C, DHEA, and 5-HTP can be found in independent health food and most drug and mass market stores, as well as online at www.natrol.com.

(a) This statement has not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure or prevent any disease.

Ester-C is a licensed trademark of Zila Nutraceuticals, Inc.

About Natrol

Founded in 1980, Natrol, Inc. (NASDAQ:NTOL) is a diversified nutrition company that manufactures and markets premium-branded nutritional products, functional teas and sports fitness products under the Natrol(R), Laci Le Beau(R) and Prolab(R) brands, respectively. Natrol markets more than 200 nutritional products designed to meet a wide range of consumer needs. The products are available at more than 54,000 food, drug, mass market and independent health food stores, catalogs and Internet sites, gyms and specialty stores nationally and in select foreign countries. For more information, visit www.natrol.com.