Gen One Laboratories Old Jack Extreme is an advanced pre-workout stack that effectively increases energy levels, raises the level of motivation and allows you to maintain the effect of a training pump. The supplement strongly stimulates, while at the same time encouraging concentration, and intensifies the reduction of adipose tissue from resistant sites. In addition, it provides vitamins involved in energy metabolism that, in synergy with ergogenic substances, contribute to the improvement of the body's exercise capacity.

1 scoop mixed in about 250 ml of water for about 30 minutes before exercise.

COMPOSITION

Serving Size: 17 g
Servings Per Container: 30

Amount Per Serving:

Vitamin C (as ascorbic acid)  250mg

Vitamin B3 (as niacinamide)  60mg 

Vitamin B6 (as pyridoxine HCI) 1mg

Vitamin B12 (as cyanocobalamin)   50mcg

L-citrulline  4g        

Beta-alanine  4g     

Creatine disodium phosphate  2g   

Arginine alpha-ketoglutarate  1g   

Taurine  1000mg     

Proprietary blend  806mg             

N-acetyl-l-tyrosine, caffeine anhydrous (300mg), Senegalia Berlandieri extract (leaf) (providing phenylethylamine alkaloids including beta phenylethylamine HCL, n,n dimethyl-beta-phenylethylamine, n-methyl-beta phenylethylamine HCL, n-methyl-beta- methylphenethylamine HCL), Cognizin Citicoline, Mucuna pruriens (98% l-dopa), theophylline, isopropylnorsynephrine, alpha yohimbine, huperzine A.