Supplements for teenagers?

If 18, SURE! I recommend anything I would recommend for older people. My list:

--Creatine Monohydrate (take 5g, every day, before training on days you lift) and Beta Alanine at 3g (or buy a preworkout with both like MTS Nutrition CLASH --BCAA (Branched Chain Amino Acids) 14g DURING TRAINING or 2 scoops Machine Fuel --Fish Oil, enough caps to get 3-4g epa/dha daily (any time of day with food): I recommend EthiTech Nutrition --Vitamin D3, 5,000 IU (any time of day with food)

--MTS Nutrition Drop Factor

--MTS Nutrition Whey to meet protein needs

--MTS Nutrition Macrolution for a COMPLETE, EASY MEAL

--MTS Nutrition Machine Greens + Multi --MTS Nutrition Machine UPTAKE Probiotic/Digestive Enzyme

--MTS Nutrition Machine Motion

--MTS Nutrition Vasky

--MTS Nutrition TYRANT

--MTS Nutrition Barracuda PLUS Insurgent

--Ambrosia Overtraining Solution and Nektar

--Ambrosia RITUAL AM