Hollow Labs - Berserker Stim Pre-Workout

Serious fuel for athletes who train on the edge.

Berserker Stim™ was formulated for lifters and competitors who demand maximum drive, cell-swelling pumps, and locked-in focus—every session, no excuses. One full 2-scoop serving (40.4 g) delivers the clinical doses you need to push harder, last longer, and recover faster between sets.

What You’ll Feel

• Explosive Energy – hits fast, then tapers smoothly for the entire workout.
• Massive Pumps – 10 g citrulline + arginine opens the floodgates for vein-popping circulation.
• Endurance That Doesn’t Quit – carbs, beta-alanine, and taurine keep muscles firing when others gas out.
• Laser Focus – high tyrosine plus dual-phase caffeine clears mental clutter.
• Hydrated Power – electrolyte blend fights fatigue and maintains contractile strength.

How to Use

1. Mix 2 scoops in 14–20 oz cold water 15–20 min before training.
2. Sensitive to stimulants? Start with 1 scoop to assess tolerance.
3. Do not exceed 2 scoops in 24 h.

Warning: Contains high caffeine. Not for individuals under 18, pregnant or nursing women, or anyone sensitive to stimulants. Consult your healthcare professional prior to use.