Full Bore Pump Fits the Stim-Free Pump Category
Older pump products like Full Bore are best judged by what they actually do for blood flow and cell hydration—not by whether they make you feel stimulated. A pump formula can work very well with zero caffeine.
Citrulline Is Only One Route
A lot of people reduce pump quality to “how many grams of citrulline?” That misses glycerol, nitrates, agmatine, betaine and other routes. Six to eight grams of straight L-citrulline is a strong standalone dose, but it is not the only way to build a useful formula.

Why PUMP-OCALYPSE Is Interesting
PUMP-OCALYPSE uses 3.5 g HydroPrime® glycerol, 3 g L-citrulline, 1 g PeakO2®, 1 g arginine HCl, 500 mg agmatine and 500 mg betaine. The citrulline number alone is not huge, but the glycerol changes the picture by increasing cell hydration and fullness through a different mechanism.
Can You Stack It?
Yes, and that is one of the better uses for a stim-free pump product. You can pair it with a lower-dose stimulant pre, coffee, or a partial serving of something like WOKE AF without automatically doubling caffeine.
Bottom Line
Full Bore-style products make the most sense when you separate “energy” from “pump.” Modern glycerol-heavy formulas show that vascularity and fullness do not depend on caffeine.
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