Chemix | King of Pumps | 20 Servings

Chemix King of Pumps is a true stim-free pump pre-workout designed around one clear objective: make training feel bigger, fuller, and more productive by combining clinically meaningful nitric oxide support with aggressive cell hydration and vascular support. This is not a “just add citrulline” label. The strategy here is multi-pathway: increase nitric oxide production, preserve vascular relaxation, improve plasma and intracellular fluid dynamics, and support the fullness and pressure that serious lifters are chasing during high-volume sessions.

The backbone starts with 6g L-Citrulline, which sits directly in the clinically supported 6-8g range. Citrulline is more efficient than oral arginine because it bypasses heavy first-pass metabolism and is converted to arginine in the kidneys, where it feeds endothelial nitric oxide synthase to produce nitric oxide. The practical effect is improved vasodilation, better blood flow to working muscle, and in many users a denser, longer-lasting pump. Citrulline also participates in the urea cycle, helping clear ammonia that accumulates during hard training.

At 5g, betaine anhydrous is one of the most aggressive doses in the category. Research commonly uses around 2.5g daily, so Chemix doubles that benchmark. Betaine functions as an osmolyte, helping cells retain water and maintain volume under training stress, while also supporting methylation-dependent physiology tied to performance output. In the gym, this often translates to better muscular endurance, improved work capacity, and a more “filled out” look when combined with glycerol-based hydration.

That hydration piece is covered by 3g GlycerPump™, a branded 65% glycerol powder. Glycerol increases total body water retention and promotes hyperhydration when fluid intake is adequate, which can materially change how muscles feel during training: fuller contractions, better endurance in longer sessions, and a rounder pump that doesn’t vanish after the first few sets. GlycerPump™ is a meaningful upgrade over unstable raw glycerol inputs because it is designed for better usability and consistency in powdered formulas.

Endo-pump™ at 800mg is included at the full listed target dose for this proprietary Chemix botanical matrix. Public peer-reviewed data on the trademarked blend itself is limited, so the evidence case is weaker than for citrulline or betaine, but the formulator’s intent is clear: support endothelial nitric oxide signaling and vascular function through flavonoid-rich compounds including pomegranate-derived constituents and epicatechin. It is best viewed as a complementary blood-flow amplifier rather than the foundation of the formula.

VasoDrive-AP® at 254mg is a standout inclusion. This patented casein hydrolysate provides the bioactive lactotripeptides VPP and IPP, which act as natural ACE inhibitors. That matters because ACE inhibition reduces vasoconstrictive pressure and helps preserve bradykinin, supporting arterial flexibility and blood vessel relaxation through a pathway distinct from citrulline-driven NO production. In plain English: citrulline helps create the signal to dilate, and VasoDrive-AP® helps create a vascular environment where dilation is easier to sustain.

Gymnema Sylvestre at 250mg standardized to 75% gymnemic acids is a more unusual addition in a pump product. It is not a headline ergogenic, but it may support glucose handling and nutrient partitioning around meals and training. For users who train fed or around carbohydrate intake, that makes the formula feel more metabolically “purpose-built” than a simple vasodilator stack.

S7™ at 100mg rounds out the formula with a clinically relevant dose above the 50mg amount used in manufacturer-sponsored human research showing substantial increases in circulating nitric oxide. Its mechanism is less about directly supplying nitrate and more about supporting endogenous NO production and reducing reactive oxygen species that degrade NO. That helps extend the life of the pump rather than just spike it.

The synergy is where King of Pumps separates itself. Citrulline increases NO production, S7™ helps preserve NO bioavailability, VasoDrive-AP® supports vascular relaxation through ACE inhibition, and GlycerPump™ plus high-dose betaine create the intracellular and extracellular hydration pressure that makes those blood-flow benefits feel dramatic. Transparency is also strong here: no hidden proprietary mega-blend masking the core actives. The only real limitation is that Endo-pump™ is not supported by the same public evidence depth as the better-established ingredients.

What to expect: on day 1, most users notice increased fullness, better vascularity, and more sustained pumps as the session goes on, especially if hydration is on point. Over 2-4 weeks of consistent use, the betaine and repeat hydration effect can make sessions feel more repeatable, with better work capacity and a more reliable training pump even on long hypertrophy days.

How to Use Chemix | King of Pumps | Pump Preworkout