How old should you be to take jack3d?

im 19 and i run about 2 miles a day but i want to be able to run alot faster and my brother in law is 24 and he takes it and says that it works great and that it makes him not as tired as quick. im soon going into the air force and i want to get in as great of shape as i can cause im trying out for PJ's. so im just wondering if jack3d will be right for me. i weigh 165, im 5'9'' and 19 years old