Source Naturals(R) Phosphatidyl Serine Retains High Potency

Formulation Guarantees Shelf Stable Product in Soft Gels

SCOTTS VALLEY, Calif., Nov. 5 -- Source Naturals, creators of the highly acclaimed line of health and wellness supplements, is describing its improved form of Phosphatidyl Serine (PS) soft gels as the most shelf-stable PS available. The activity of PS was investigated by the makers of Leci-PS(R), and two critical aspects were identified which influence the concentration of PS in soft gels. First, an enzyme used in the manufacture of PS must be eliminated prior to encapsulation, because this enzyme reacts with glycerol (in the gelatin), causing a degradation of PS. Second, it was found that moisture from the gelatin shell must be blocked from migrating into the capsule fill, because the presence of water in the PS fluid will cause a further loss of content.

The new, patent-pending Leci-PS(R) 20V blend, introduced in Source Naturals Phosphatidyl Serine Complex soft gels, contains an advanced PS formulation, 100% free of residual enzyme activity, which continually inhibits moisture migration. While nearly all other PS soft gels lose potency while sitting on the shelf, Source Naturals' new Leci-PS(R) soft gels remain stable.

PS is best known for its ability to reverse the effects of age-related cognitive decline and loss of memory, as well as playing a vital role in other brain functions. Phosphatidyl serine has also been shown to reduce stress and depression. PS is found naturally in soy beans, green leafy vegetables, rice and certain meat products. However, consuming an effective amount of PS simply through food is difficult, because the typical American diet includes many refined and processed foods, resulting in a loss of PS content.

"The natural PS content in soybeans is quite low. Approximately 3 kg of soybeans would have to be consumed to attain 100 mg of PS," said Stephen Sturm, Senior Project Manager in Product Development at Source Naturals. "We recommend supplementing the diet with 100 to 300 mg of our pure PS per day. This supplementation is especially beneficial for vegetarians, people on low-fat or low-cholesterol diets, and the elderly."

Source Naturals PS is derived strictly from plant sources, and manufactured by the company that pioneered the use of plant-based PS. Numerous animal studies and human clinical trials have proven that soy-derived PS is just as efficacious as bovine-derived PS for mental decline. A clinical trial by Crook (1998) showed that three months of supplementation has effects on memory and cognition that are comparable to those of bovine-derived PS, with results even slightly favoring the soy-derived Leci-PS(R).

Source Naturals -- founded in California by Ira Goldberg in 1982 -- is committed to enhancing individual potential to enjoy optimal health and well-being by providing superior-quality dietary supplements and nutritional education. For more information, pricing or purchase locations, please visit .

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