In order for erection to occur, the nerves of the penis must be functioning properly, blood circulation to the penis must be adequate, and there must be stimulus from the brain. If there is something interfering with any or all of these conditions, a full erection is not possible. Common causes for erectile dysfunction include diseases that affect blood flow and nerves, psychological factors such as stress, depression, and performance anxiety, and injury to the penis.

According to the National Institutes of Health, a majority of men at some point in their life experience occasional failure to achieve erection which can occur for a variety of reasons such as drinking too much alcohol or from being extremely tired. Failure to achieve erection less than 20% of the time is not unusual and medical treatment is rarely needed. But the causes for this minor problem might lead to a permanent condition where failure to achieve erection occurs more than 50% of the time. Once this stage of erectile dysfunction is reached, medical treatment is required to reverse the situation. Approximately 5 percent of 40-year-old men and between 15 and 25 percent of 65-year-old men experience erectile dysfunction on a long-term basis.

Western medicine relies on aggressive prescription drugs and surgery to deal with many problems related to sexual dysfunction. Unfortunately, these methods often result in unwanted and even dangerous side effects. Non-medical methods of penis enhancement through exercise using weights, straps, rings, and pumps have proven destructive to muscle tissue. And natural pills provide fleeting, inconsistent results.

Ayurveda, the science of life, prevention and longevity, is the oldest and most holistic and comprehensive medical system available. Its fundamentals can be found in Hindu scriptures called the Vedas - the ancient Indian books of wisdom written over 5,000 years ago. Ayurveda uses the inherent principles of nature to help maintain health in a person by keeping the individual's body, mind, and spirit in perfect equilibrium with nature.

Vajikarana, is one of the eight major specialties of Ayurveda. Vajikarana is "a process or a drug, which make a man sexually as strong as a horse and able to copulate for long and frequently with many wives and partners." Vajikarana prescribes the therapeutic use of various aphrodisiacs and tonic preparations for enhancing the reproductive capabilities and vigor of men while strengthening the body and overall well-being.

Vajikarana doctors combine a proprietary herbal formula based on centuries old wisdom with advice on diet, exercise, mental training, and relaxation to help men reach their peak and overcome sexual concerns through safe, natural means.

For centuries, Indian kings and princes have used various Ayurvedic herbs mixed with milk, honey, and other nutrients to maintain the strength of a "thousand horses" required for adequately pleasuring their vast harems in the tradition of the Kama Sutra.