I'm 19, 5'9, and 175 pounds. if i take pituitrophin pmg 6850, for my pituitary glands, will i grow taller since it helps the growth hormones?

No: As a 19 year old male, your growth is likely done and your bones growth plates closed. At this age taking growth hormone will bulk muscle and could make bones thicker, but are not going to make them longer, and thus, no increase in height. I urge you to think twice about putting pituitary supplements you describe into your body without someone who knows all their affects guiding you- can be danger.

No: Your growth is dependent on your genetic predisposition and healthy diet. Hormonal therapy helps only when deficient. Most of your growth may be done though your epiphyseal plate usually closes at about 25 years hence you may grow a little.