What is Monster Pump Blend?
Monster Pump Blend is a mid-tier injectable amino acid pump formulation sitting between the entry-level pump blend and the fully loaded Mass Monster. Per ml it contains L-Arginine (100 mg), L-Ornithine (100 mg), L-Citrulline (100 mg), L-Lysine (100 mg), and Glycine (50 mg). The arginine and citrulline combination drives nitric oxide production and sustained vasodilation, while the added lysine and glycine bring anxiolytic, recovery, and sleep-supporting benefits that set this blend apart from a pure pump product. It works well as a pre-workout, stacks easily with carnitine or the MIC blend, and can also be used before bed for its relaxing and recovery-supporting properties.
Mechanisms of Action
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 behind the pump effect
L-Citrulline (100 mg) recycles into arginine in the kidneys, extending and sustaining nitric oxide production well beyond what arginine alone can provide and improving endurance in the process
L-Ornithine (100 mg) participates in the urea cycle to clear ammonia during high-intensity output, reducing metabolic fatigue and supporting longer sustained effort before performance drops off
L-Lysine (100 mg) supports collagen and structural protein synthesis while also modulating serotonergic activity, contributing to reduced anxiety and improved mood as a secondary effect
Glycine (50 mg) acts as an inhibitory neurotransmitter precursor with calming and sleep-promoting properties, supporting recovery and relaxation when used before bed or after training
Benefits
Fantastic pumps delivered through the combined nitric oxide-boosting activity of arginine and citrulline, producing strong vascularity and muscle fullness during training
Lower anxiety and improved mental performance as a meaningful secondary benefit from lysine and glycine, which have documented anxiolytic and neurotransmitter-modulating activity
Fuller physique and better muscle recovery supported by the structural amino acid content and the nitrogen-clearing effects of ornithine during and after training
Better sleep with glycine in particular shown to improve sleep quality and reduce time to sleep onset, making this blend genuinely useful as a pre-bed recovery tool as well
Versatile stacking pairs well with carnitine or the MIC blend pre-workout for an even more pronounced pump and fat-burning effect
Dosing
Level | Dose |
|---|---|
Beginner | 0.5 ml per side (bilateral) |
Intermediate | 1 ml per side (bilateral) |
Advanced | 1.25 ml per side (bilateral) |
Administer intramuscularly into the muscle group being trained, split bilaterally. Best taken about an hour before training alongside carbs. Can also be used before bed to support recovery and sleep quality via the glycine and lysine content. Stacks well with carnitine or the MIC blend for a stronger pump and added metabolic benefit.
Warning: Do not exceed 1.25 ml per side lightly. Going above 1 ml can produce extremely intense and painful pumps, particularly in smaller muscle groups. Work up to higher doses gradually and assess how your body responds before pushing to the maximum. Check for drug interactions if you are currently on any medications.
Safety Profile
Post-injection pain the primary side effect, manageable with proper IM technique and regular site rotation
Painful pumps at higher doses particularly in the lower back, shins, or other muscles prone to compartment pressure during high-volume training
Drug interactions worth checking if you are on any current medications, as amino acid compounds can interact with certain drugs affecting nitrogen metabolism or serotonergic pathways
Citations
Boger, R. H., et al. L-Arginine and nitric oxide in vascular function. PubMed. https://pubmed.ncbi.nlm.nih.gov/12428980/
Castillo, L., et al. L-Citrulline and arginine metabolism in humans. PubMed. https://pubmed.ncbi.nlm.nih.gov/12771321/
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.
