Total. Load. Of. Bollocks.
Waste of money.
Eat a healthy balanced diet, exercise and cut out/down booze.
Cut out empty calories – reduce your consumption of refined carbs like white bread, rice, sugar etc. and increase healthy fats, lean protein, veg and get your carbs from low gi sources like sweet potatoes.
Spend your money on healthy food not pills and powders.
I am not adverse to supplements, indeed I use ZMA and protein powder. But they are just that, supplements to my normal diet. .