I am 19 years old and still 168 cm is that any way to become more taller my parents are all tall. please help?

Nature: Whether you will be taller depends on whether you are still growing since last year. Some men don't stop growing until they are in the 20's if they were slow in developing pubertal changes. But if you are the same height as you were the past 2 years, there is not much you can do to be taller. You are still taller than about 30 % of the population in the US. Focus on your other gifts and talents.

Unlikely to happen: At nineteen your growth centers have likely closed and you are unlikely to grow taller.If you want to know for sure an x-ray of your wrist/hand can be analysed for bone maturity & see if more growth is possible.Good nutrition, rest and exercise allow a person to reach their tallest height while the opposite will stunt growth.No medication will increase height after growth centers close