Pre-workout support for harder training sessions
USP Labs Jack3d Advanced delivers 2000mg L-citrulline, 2000mg beta-alanine, 1000mg creatine monohydrate, 250mg L-tyrosine, 200mg VitaCholine (choline bitartrate), 130mg Zynamite mango leaf extract and 130mg caffeine per serving, alongside 40mg vitamin B3 and 40mg vitamin C. The 248g tub provides 45 servings at a moderate caffeine dose of 130mg.
VitaCholine is a high-bioavailability choline source that supports acetylcholine production - the neurotransmitter underpinning the neuromuscular signal that drives muscular contraction and mental focus. Zynamite (Mangifera indica) is a non-caffeine stimulant studied for acute cognitive and physical performance effects, allowing Jack3d to deliver stimulant-level focus at a lower total caffeine dose than many competitors. L-tyrosine supports catecholamine (dopamine, norepinephrine) synthesis relevant to focus under training stress. L-citrulline supports nitric oxide production for blood flow, and beta-alanine drives carnosine buffering of muscle acidity.
Jack3d Advanced is positioned as a lower-caffeine pre-workout with a differentiated focus stack built around choline and Zynamite rather than stacking caffeine to hit high stimulant intensity. 130mg caffeine is roughly equivalent to a strong cup of coffee - accessible for daily training use without requiring a tolerance reset cycle. The 45-serving tub provides strong run-rate value compared to many premium pre-workouts sized for 20-30 servings.
Built for gym-goers and athletes who train daily or near-daily and want consistent pre-workout performance without escalating caffeine exposure. The lower caffeine dose makes it suitable for afternoon or evening training sessions for individuals who are caffeine-sensitive. Contains vitamin C 40mg (50% NRV). No major allergens declared; check label for full allergen information.
Alternative: XL Nutrition The Purge 225g (300mg caffeine, 2.5g beta-alanine per 30g scoop) delivers 300mg caffeine alongside 2.5g beta-alanine and 1g L-arginine from an own-brand supplier.
