Shilajit is the most important drug of Ayurvedic and folk-medicine systems. It is a vegetative fossil found in the Himalayan Ranges. The fossilization is believed to have occurred during the formation of the Himalayas!
In the raw form it is a bituminous substance, which is a compact mass of vegetable organic matter composed of dark red gummy matrix. It is bitter in taste, and its smell resembles cow's stale urine. The botanical name of Shilajit is Asphaltum (mineral pitch).

In Ayurveda, Shilajit is described as a product of four minerals: gold, silver, copper and iron.

According to the predominance of the minerals of the source rock, it was classified into four categories: Sauvarna, Rajat, Tamra and Lauha. The last variety Lauha shilajit or blackish-brown Shilajit is common and is supposed to be most effective. This is the kind we offer to you.

Shilajit is the traditional herb of choice for ALL medicine men in the Himalayas and spread across India and Tibet for its phenomenal power when mixed with pure milk or soy milkto enhance energy, sexual and spiritual power. Just 10 mg of purified shilajit has proven efficacy in 30 minutes for a full grown human. More than 1g per day is not recommended

Shilajit – can be used in its raw form for animistic ritual and dream enhancement ceremonies or in its super purified form for enhancing both mental and psycho spiritual activity of the brain.

Studies on the anti anxiety, memory enhancing and cognitive ability enhancing properties can be found on this study:

Asphaltum Research Study

Ghosal, S., J. P. Reddy and V. K. Lal. 1976. Shilajit I.: chemical constituents. Journ. Pharm. Sci. (USA) 65(5): 772-73. Phillips, Paul. On Shilajit on the Internet