What is the best supplement to build muscle, weight and mass?

I am almost 17 years old and I want to gain alot of weight/mass/muscle. I am currently 5"8, 128lbs. What protein supplement or supplement could i use to gain that weight. Please do not say eat alot because i do. I have a high metabolism. Thanks!!!

How to Lose Weight Gain Muscle

Recommended Answer:

L-Glutamine and L-Arginine. 4-5 Grams each day. Also take a zinc supplement, along with about 4000 ui of vitamin D3. This will increase HGH and testosterone...probably to insane levels because youre young. This is going to be interesting to see what happens to your muscles in a couple months. Again, do pyramid sets at the gym. maybe 4 or 5 sets of increasing weight levels, until you cant lift the last weight set or can only do 1 or 3 lifts. sleep, try not to masturbate or be stressedI would stay away from protein powders. Most of them have soy in them, and soy can actually lower testosterone and raise estrogen. You dont want that. Just eat lots of meats and carbs, especially before and after working out.