Metabolic Nutrition Stim-Free Pump – Pure Pharmaceutical Grade Non-Stimulant Pre-Workout
Stim-Free Pump is a synergistic mix of pharmaceutical-grade active ingredients scientifically chosen to maximize muscular pump, promote endurance, improve high-intensity output, build lean muscle, and increase circulation and hydration — all without stimulants or caffeine. Metabolic Nutrition uses a pharmaceutical-grade, class-leading 10 grams of active ingredients per scoop, developed for people who want to maximize both athletic performance and general health.*
Why lifters choose Stim-Free Pump
- Improves muscular circulation & hydration — built around Beta-Alanine, Citrulline Malate, and Glycerol
- No stimulants or caffeine — ideal for late-night training sessions or stacking on top of a stimulant pre-workout like E.S.P. Extreme without doubling up on caffeine
- Class-leading dosages — 10g of active ingredients per scoop rather than an underdosed proprietary blend
- Unflavored — mixes cleanly into any pre-workout, amino, or thermogenic powder
- GMP-certified, manufactured in an FDA-inspected facility
How do you use it?
As a dietary supplement, take one serving (1 scoop) with 8–12 oz of water or your preferred beverage, 30 minutes prior to your workout.
What's in a serving?
One scoop (10g) provides Beta-Alanine 3,000 mg, Citrulline Malate (2:1) 3,000 mg, Glycerol Powder 3,000 mg, Cluster Dextrin 725 mg, and Agmatine Sulfate 250 mg.*
Who is this for?
Anyone who wants a pump- and endurance-focused pre-workout without stimulants — whether that's for a late-night training session, stacking with a caffeinated pre-workout, or simply avoiding stimulants altogether.
Frequently asked questions
How many servings are in the tub?
300g provides 30 servings at 10g (1 scoop) per serving.
Can I stack this with a stimulant pre-workout?
Yes — Stim-Free Pump is commonly mixed with a caffeinated pre-workout like E.S.P. Extreme to add pump and hydration support without adding more caffeine.
Is this flavored?
No, it's unflavored, so it mixes cleanly with other powders or your preferred beverage.
About Metabolic Nutrition
Metabolic Nutrition formulates clinically dosed sports nutrition products with a focus on maximum-strength formulas and minimal fillers. Products are manufactured in a GMP-certified, FDA-inspected facility.
*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. Consult your physician before use.