Aging in man is a gradual process. He experiences changes in his energy level, body structure, fat distribution and mental prowess. Risks of developing illness such as hypertension, diabetes and prostate problems increase with age. Sexual function declines but at a variable rate between individuals. Treatment for erectile dysfunction is available and effective. However, several cases of unsupervised therapy recently, had lead to undesirable complications and death. Testosterone or male hormone replacement therapy is another attractive and promising solution to the problem of the waning manhood.