hi,
My age is above 26 years,But even though I don't have beard and moustaches,
Please can anybody help me out how to grow it.
Whether there is any medicine to overcome it.

There is nothing that you can do to increase your beard development. Genetics and hormones are the major determinants of an individual's beard development. Unless you suffer from a hormonal imbalance, generally there is no medical treatment available to increase beard growth. If you have any doubts or concerns, you should consult a physician and possibly even an endocrinologist and dermatologist.

Adolescent and young adult males can reasonably expect that the development of their facial hair will increase over time. Genetics and hormones, however, remain the controlling factors. The timetable varies widely among individuals. Some may develop fully mature beard growth in the teen years, while others may not do so until their late twenties. Still others may never develop appreciable beard growth.