COMING SOON

COMING SOON

Black container of REIN NUTRITION Stim-Pre-Pump dietary supplement with gold and primary black label, featuring logo, product name, and flavor labeled as Mixed Berry, with nutritional highlights on the side.

Stim-pre-pump

  • With 10g of pure citrulline, you're getting 2–3x more than most pre-workouts on the market — delivering next-level blood flow, muscle fullness, and nitric oxide production with every lift.

  • Loaded with 4g of beta-alanine, plus taurine and betaine anhydrous, this formula hits harder and lasts longer. That’s 2–2.5x the endurance power most products offer — so you can push through every set.V

  • A clean combo of caffeine, theobromine, velvet bean, and tyrosine keeps your mind sharp, mood elevated, and energy steady — no crash, no jitters, just locked-in intensity.

  • You get 30 full servings per container, and even a half scoop delivers clinically effective doses — giving you flexibility without sacrificing performance.

  • All Chasing Gains athletes get 20% off Rein Nutrition — because we don’t just train harder, we fuel smarter.

rein nutrition

Supplement facts label with ingredients and nutritional information, including 10 grams of L-Citrulline, 4 grams of Beta-Alanine, 220 mg of Caffeine, and other ingredients listed.