30 packets of concentrated extract (4.0gm equivalent to 10 gm of the raw herb).&;nbsp; Extensive clinical trials (mainly with concentrate extracts) have shown that Goji (lycii berries) is an excellent food that can assist in the regulation of blood sugar, cholesterol and hormones; can increase the production of anti-oxidants (Super Oxide Dismutase, Catalase, etc.).&;nbsp; It has been shown to assist in improving vitality, libido, sexual performance, and the health of the sexual organs.&;nbsp; Visit the U.S. government's health web site Medpub.org for information on the many clinical trials that have been performed on this nutrient in its relationship to cancer, leukemia, diabetes, and sexual performance and health.&;nbsp; Goji should not be consumed by pregnant women as it can stimulate uterine contractions.