What is Pump Blend?
Pump Blend is a clean, focused, budget-friendly injectable formulation delivering L-Arginine (100 mg), L-Ornithine (100 mg), and L-Citrulline (100 mg) per ml. It is the entry-level option in the pump blend lineup, stripped down to three core compounds that each contribute a distinct role in vasodilation, endurance, and recovery. Arginine and citrulline work together to drive nitric oxide production and sustain the pump through complementary mechanisms, while ornithine addresses the metabolic fatigue and recovery side through urea cycle activity and ammonia clearance. The injectable format makes each of these compounds meaningfully more effective than their oral counterparts by bypassing digestive absorption, and pinning directly into the trained muscle group on the day of training amplifies the local effect. It stacks well with carnitine and choline for a more complete pre-workout protocol.
Mechanisms of Action
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L-Arginine (100 mg) serves as the direct substrate for nitric oxide synthase, producing nitric oxide that relaxes vascular smooth muscle and drives the vasodilation responsible for the pump and improved blood flow during training
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L-Citrulline (100 mg) is converted back to arginine in the kidneys, extending and sustaining nitric oxide production well beyond what arginine alone achieves by continuously replenishing the NO substrate pool and avoiding the absorption ceiling of direct arginine supplementation
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L-Ornithine (100 mg) participates in the urea cycle to clear ammonia produced during high-intensity muscular effort, reducing metabolic fatigue and supporting the ability to sustain output across longer and more demanding training sessions
Benefits
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Insane pumps driven by sustained nitric oxide production from the arginine and citrulline combination, producing skin-splitting vascularity and muscle fullness during training that oral versions of these compounds struggle to match
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Improved blood flow and nutrient delivery as a direct consequence of NO-mediated vasodilation, ensuring working muscle is continuously supplied with oxygen and nutrients throughout the session
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Better muscular endurance supported by ornithine-mediated ammonia clearance that delays the metabolic fatigue accumulation that normally forces sets to end prematurely
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Better recovery with ornithine's urea cycle activity reducing the nitrogen waste buildup that contributes to post-training soreness and prolonged recovery timelines
Dosing
|
Level |
Dose |
Timing |
|---|---|---|
|
Starting |
0.5 ml per side (bilateral into muscle trained) |
45 minutes before training |
|
Working |
1 ml per side (bilateral into muscle trained) |
45 minutes before training |
Administer intramuscularly into the specific muscle group being trained that day, split bilaterally. Pinning directly into the target muscle approximately 45 minutes before training with carbs on board maximizes the pump effect. Pairs well with injectable carnitine and choline for a more complete pre-workout stack covering fat oxidation, acetylcholine signaling, and nitric oxide simultaneously.
Safety Profile
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Post-injection pain possible for some users at the injection site, manageable with proper IM technique and regular site rotation
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Excellent overall tolerability with all three ingredients being naturally occurring amino acids with well-established safety profiles, making this one of the safest injectable blends available in terms of systemic risk
Citations
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Boger, R. H., et al. L-Arginine and nitric oxide in vascular function. PubMed. https://pubmed.ncbi.nlm.nih.gov/12428980/
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Pérez-Guisado, J., et al. Citrulline malate enhances athletic anaerobic performance and relieves muscle soreness. PubMed. https://pubmed.ncbi.nlm.nih.gov/19308487/
Disclaimer: The information provided is intended solely for educational purposes and should not be considered a replacement for professional medical advice. All compounds referenced are not for human consumption.
