Study Examines Grip Strength Measurements in Subjects with Tennis Elbow (Tendonitis) When Using Cyanotech’s BioAstin® Natural Astaxanthin

KAILUA KONA, Hawaii — March 23, 2006 — Cyanotech Corporation (Nasdaq Capital Market: CYAN), a world leader in producing high-value nutrition and health products from microalgae, has concluded a study of the effects of BioAstin Natural Astaxanthin in humans for the purpose of alleviating pain associated with Tennis Elbow (Tendonitis or lateral humeral epicondylitis).

The double-blind study by an independent research group of 21 subjects taking BioAstin and 12 subjects taking a placebo found that subjects who took BioAstin for 56 days showed a significant increase of 93% in grip strength measurements (GSM) without pain. This correlation of improved GSM without pain and use of BioAstin suggests that daily use can help alleviate pain associated with Tennis Elbow, and increase mobility.

“These findings may lead to greatly improving the standard of living for those who suffer from such muscle tendon disorders,” said Dr. Gerald R. Cysewski, Chairman, President and CEO of Cyanotech. “They add to our growing body of knowledge about the positive effects and health benefits of BioAstin Natural Astaxanthin.”

Previous studies have provided data suggesting that daily use of BioAstin can help alleviate pain associated with joint damage, specifically in carpal tunnel syndrome, rheumatoid arthritis and joint soreness after strenuous exercise.

Information about this research is available at

About Cyanotech ---- Cyanotech Corporation, a world leader in microalgae technology, produces BioAstin® Natural Astaxanthin and Hawaiian Spirulina Pacifica®—all natural, functional nutrients that enhance human health and nutrition, providing significant antioxidant, anti-inflammatory and immune response benefits. NatuRose® Natural Astaxanthin is a natural pigment source that also promotes animal health and nutrition, primarily in aquaculture. Phycobiliproteins are fluorescent pigments used in medical diagnostic testing and research. Cyanotech produces these products from microalgae grown at its 90-acre facility in Hawaii using patented and proprietary technology. Cyanotech products are distributed to nutritional supplement, nutraceutical, cosmeceutical, and animal feed makers and marketers in more than 40 countries worldwide. Cyanotech was the first microalgae company in the world to obtain ISO 9001:2000 certification. Corporate data and product information are available at

“Safe Harbor” Statement under the Private Securities Litigation Reform Act of 1995 ---- Except for statements of historical fact, the statements in this news release are forward-looking. Such statements are subject to a number of risks and uncertainties that could cause actual results to differ materially from the statements made. These factors include, but are not limited to, general economic conditions, forecasts of sales in future periods, changes in sales levels to Cyanotech’s largest customers, weather patterns, production problems caused by contamination, risks associated with the acceptance of new products, competition, foreign exchange fluctuations, government regulation, and other factors more fully detailed in the Company’s recent Form 10-Q and annual form 10-K filings with the Securities and Exchange Commission.

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