Description
Berserker Serum is Hollow Labs' zero-caffeine pump formula — built for blood flow, muscle fullness, and endurance deep into a session. Train at night, or stack it cleanly with whatever caffeine you already run. Full label transparency, every dose disclosed.*...
Berserker Serum is Hollow Labs' zero-caffeine pump formula — built for blood flow, muscle fullness, and endurance deep into a session. Train at night, or stack it cleanly with whatever caffeine you already run. Full label transparency, every dose disclosed.*
- Stim-free pumps and endurance*
- Stacks with any pre-workout or your morning coffee*
- Works for late-night sessions — no sleep disruption from caffeine*
- Blue Raspberry
*These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.