Each capsule contains:

Supplement Facts For Ginkgo Biloba

Ingredient Amount Per Capsule

Ginkgo Flavonglycosides 24 %

Terpene Lactones 6 %

Directions:

For mature adults to take by mouth one capsule, 3 times a day at mealtime, with a large glass of water. Allow 12 weeks of the use before determining its efficacy.

Can Ginkgo Biloba improve brain function?

From Smart Drugs and Nutrients:
GINKGO BILOBA: A Nootropic Herb?
Extracts from the leaves of the ginkgo biloba tree have been used by Chinese medicine for thousands of years. European physicians write over 1.2 million prescriptions per month for it. Ginkgo biloba is used to improve cerebral circulation, mental alertness, and overall brain functioning.
More than 34 human studies on ginkgo have been published since 1975, showing that ginkgo works by increasing blood flow throughout the body and brain. Ginkgo increases the productions of adenosine triphosphate (ATP, the universal energy molecule). It also improves the brain's ability to metabolize glucose, prevents platelet aggregation inside arterial walls by keeping them flexible, improves the transmission of nerve signals, and acts as a powerful antioxidant.
Ginkgo biloba leaf is effective for people with symptoms of reduced blood flow to the brain and extremities. It has been shown to be helpful with many of the complaints of the elderly such as: memory loss, slow thinking and reasoning, depression, dizziness, ringing in the ears, headaches, and senile macular degeneration (a major cause of blindness).
One study even shows significant improvement in people who have both Parkinson's and Alzheimer's disease. In this study 25 people with Parkinson's disease and signs of Alzheimer's disease were given ginkgo extract daily for one year. They were tested with standard tests, clinical evaluations, and a new computerized EEG. The scores improved significantly.

Does Ginkgo Biloba help combat the effet of aging?

From: The Honest Herbal Varro E. Tyler, PhD, Pharmaceutical Products Press, third ed, 1993.
The ginkgo tree has survived in China for almost 200 million years; the fruits and seeds have been used there since 2800 B.C. Only recently, however, has the West gotten in touch with ginkgo biloba's helpful properties. In 1988, doctors in Germany (where it's sold as an over-the-counter drug) wrote more prescriptions for it than other prescription drugs. In the U.S., it's currently marketed only as a health food supplement.
Gingko biloba is most effective as a concentrated extract, found in either liquid or tablet form. It has beneficial effects on the circulatory system, particularly among the elderly. Studies have shown it can help in treatment of their short-term memory loss, headache, tinnitus (ringing in the ears) and depression by improving blood flow in the arteries and capillaries. This remnant of the dinosaur age can help our own aging population feel a little less "prehistoric."

Warning

Mild gastrointestinal upset occurred in <1% of patients in clinical studies. Individuals with poor blood flow to the brain (i.e., cerebrovascular insufficiency) may experience a mild, transient headache for the first one or two days of use. There are no known interactions with commonly prescribed drugs. The current German Commission E Monograph lists no contraindications to the use of gingko during pregnancy or lactation.