Hair Loss Treatment

Hello everyone! I am just wondering if you know some good treatment for hair loss for men. I am really worried now because it's been a month already since I first noticed that I am experiencing hair loss. Every morning when I wake up, I see hair in my pillow. When I take a bath, and also notice some hairs falling. I do not want to lose my hair this early. For God's sake I am still 21! Hahaha. Anyone? If you know some treatment, please leave a comment okay?