No it is not safe , Amplified mass xxx contains creatine 5 grams and at your age you shouldn't be consuming creatine , creatine takes the water from your cell and take them to your muscles... you don't need this at your age.. wait till your 16 and you can take creatine supplements .. but at 13 focus on your diet because your body is still growing up ..

Creatine Phosphate + ADP --> (Creatine Kinase) --> Creatine + ATP

Creatine phosphate + ADP_______> creatine + ATP This is catalyzed by the enzyme creatine kinase.

Vitamins are totally different things to creatine. Good sources for creatine are fish and red meat. If you are willing you can also look into supplementing creatine. Creatine monohydrate is the most proven type of creatine supplement.

how creatine supplements are manufactured