1) How many grams of protein are you getting daily?

2) How much Creatine are you taking and what brand/type?

3) How are you lifting? Give me a breakdown of your weekly workout including any cardio.

Your friend must watch too much UFC.

At 19, you shouldn't need a product like this. Your testosterone levels should be fine, if you believe you have low test have bloodwork done to check your test levels.

Moving on to XTEST, I don't think you understand. You can't just "take" testosterone. Testosterone is a steroid and is controlled.

What XTEST is is an Anobol. If it did succeed in boosting your test levels you'd also be producing more estrogen. In addition to gyno (puffy nipples) and losing hair, you could also mess up what growing you have left. Estrogen is what causes your growth plates to seal.

I don't think you know what you're getting into, do some research before you go throwing stuff down your throat. Answer my first 3 questions and I'll tell you what you could do to help your growth, you do not need a testosterone booster.