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Edge Pump – Stimulant-Free Pre-Workout for Maximum Pumps, Vascularity, and Performance

Psycho Pharma 40 Servings

from £38.48

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Edge Pump is a high-performance, stimulant-free pre-workout formula created for athletes and lifters who want to experience massive muscle pumps, enhanced vascularity, and better blood flow — without the use of caffeine or other stimulants. It’s perfect for evening workouts, stack combinations, or users who are sensitive to stimulants but still want elite-level performance and muscle fullness.

This formula combines proven nitric oxide boosters and hydration agents like L-Citrulline, GlycerSize™, VasoDrive-AP®, Agmatine Sulfate, and S7™, delivering a multi-pathway pump that lasts throughout your workout.

Who is it for?

Edge Pump is ideal for:

  • Individuals who want massive pumps and vascularity without stimulants

  • Athletes who train in the evening or cycle off caffeine

  • Users stacking with stimulant-based pre-workouts and wanting a pump/NO boost

  • Physique athletes preparing for shows or photoshoots

  • Anyone looking to maximise muscle fullness and blood flow during hypertrophy training

Suitable for both men and women. Safe for daily use and stimulant-free.

Our Impression

Edge Pump delivers noticeably complete, dense muscle pumps and a consistent vascular effect without the need for any stimulants. During testing, users reported enhanced endurance, hydration, and a “skin-splitting” muscle feel, especially during high-volume workouts. The formula is clean, transparent, and built for performance — ideal for those who want total control over their stimulant intake while still getting elite results in the gym.

Whether stacked or taken alone, it delivers on its promise: pump, power, and performance — without compromise.

Ingredient Breakdown (Per Full Serving – 1 Scoop)




  • L-Citrulline (6000 mg)One of the most effective nitric oxide precursors. Increases vasodilation, blood flow, oxygen delivery, and muscle pump. Also supports endurance and reduces fatigue during high-rep sets.


  • Betaine Anhydrous (2500 mg)Enhances power output, cellular hydration, and muscular endurance. It may also support body composition and recovery.


  • GlycerSize™ (Glycerol Powder – 2000 mg)A concentrated form of glycerol that draws water into muscle cells for a hyperhydration effect. Improves fullness, vascularity, and performance.


  • Agmatine Sulfate (1000 mg)Modulates nitric oxide synthase activity and enhances blood flow. Also supports focus and may reduce pain perception during intense training.


  • VasoDrive-AP® (508 mg)A patented compound derived from casein peptides that promotes vasodilation by inhibiting angiotensin-converting enzymes (ACE). Enhances pump, nutrient delivery, and blood pressure regulation.


  • S7™ (50 mg)A blend of seven plant-based ingredients (including green tea, blueberry, and turmeric) clinically shown to increase nitric oxide production by up to 230% at a low dose. Works synergistically with citrulline and agmatine.


Dosage – Timing – Follow-Up


Dosage: Mix one scoop (approx. 12–14g) with 300–400ml of cold water.Timing: Consume 20–30 minutes before your workout.Follow-Up: May be stacked with stimulant-based pre-workouts or taken solo. Do not exceed one serving per day.
Disclaimer: This product is a dietary supplement and should not be used as a substitute for a varied diet. Do not exceed the recommended daily dose. Keep out of reach of children. If you are pregnant, nursing, taking medication, or have a medical condition, consult your healthcare professional before use. This product contains Aphrodyne and may cause side effects such as increased heart rate, anxiety, or elevated blood pressure. Use with caution and discontinue use if any adverse reactions occur. Store in a cool, dry place away from direct sunlight. The Food and Drug Administration or any other governmental authority has not evaluated the statements made here. This product is not intended to diagnose, treat, cure, or prevent any disease.

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Need help?

Edge Pump is a stimulant-free pre-workout powder created for athletes and lifters who want massive muscle pumps, enhanced vascularity and better blood flow without caffeine or other stimulants. It is positioned as suitable for evening workouts and for stacking with other supplements.

Edge Pump combines L-citrulline (6000mg), betaine anhydrous (2500mg), GlycerSize glycerol powder (2000mg), agmatine sulfate (1000mg), VasoDrive-AP (508mg) and S7 (50mg) per full serving of one scoop, giving a fully dosed multi-ingredient pump formula.

Edge Pump is stimulant free, so it can be taken at any time of day, including evening workouts, without the risk of disrupting sleep. It can also be stacked with a stimulant-based pre-workout for extra energy alongside the pump effect.

VasoDrive-AP is a patented ingredient dosed at 508mg in Edge Pump, included alongside L-citrulline and agmatine sulfate as part of the formula’s multi-pathway approach to blood flow. It is commonly used in pump-focused supplements to support vascularity and circulation during training.

Edge Pump is built around 6000mg of L-citrulline, 2500mg of betaine anhydrous, 2000mg of GlycerSize and 1000mg of agmatine sulfate to support nitric oxide production, pump and hydration, alongside VasoDrive-AP and S7 for additional blood flow and vascularity support throughout a workout.

According to the label, Edge Pump should be taken as one scoop, approximately 12-14g, mixed with 300-400ml of cold water, 20-30 minutes before a workout. Do not exceed one serving per day.

Yes. Edge Pump is stimulant free and built around commonly used pump ingredients such as L-citrulline and agmatine sulfate, making it a reasonable option for those new to supplementation who want a pump-focused product without a stimulant kick.

Edge Pump is explicitly designed to be stacked with a stimulant-based pre-workout or taken on its own, and can also be combined with creatine or a protein shake, since it does not add to daily caffeine intake.

Edge Pump is intended for healthy adults over the age of 18. Do not exceed the recommended serving. If you are pregnant, breastfeeding, taking medication or have a pre-existing medical condition, consult a doctor before use.

Edge Pump is available through Cross The Limits, an authorised UK retailer. Orders placed before 4pm are dispatched the same day, with free UK shipping on orders over £89.

Psycho Pharma

Psycho Pharma

Psycho Pharma is a trailblazing supplement brand that prides itself on breaking the mold with innovative, high-octane products designed for athletes who need peak performance, both physically and mentally. The founders have crafted an impressive lineup that caters to the needs of serious athletes and fitness enthusiasts—a dedication cemented even further by recently bringing famous fitness star and former WWE wrestler Eric Bugenhagen on board. Explore our selection of Psycho Pharma supplements to elevate your training and achieve the impossible.