Can i take height supplements to increase height? at 16?

There are no over the counter "height supplement" that would increase your height. Your height is mostly genetically determined. It is average of your parents height plus 2 inches for a male, on average. For healthy diet: http://www.choosemyplate.gov/., exercise 30 minutes/day, drink enough water daily so your urine is mostly colorless, have safe sex, no tobacco alcohol weed or street drugs.