Trained by JP Pumpage is a stimulant-free pre workout designed to maximise muscle pump and hydration for a stronger, longer workouts. Built around a Cell Swell Matrix, it uses L-Citrulline for improved blood flow and Glycersize glycerol to boost cellular hydration. Backed by a UK-based brand known for quality and transparency, this formula also includes PeakO2 and S7 to amplify the pump.

400 grams pre-workout – compact tub designed for regular sessions.

Benefits & Features:

• Maximises muscle pump and vascularity for a more intense workout.
• Glycerol hydration supports endurance and helps you push through longer sets, and electrolytes maintain hydration and muscle function even in hotter gym rooms.
• Stimulant-free, ideal for late training or caffeine sensitivity.
• Pairs well with protein powder routines for balanced workouts.
• PeakO2 adaptogenic mushrooms support oxygen utilisation and recovery, helping you sustain high intensity across sessions and return ready for the next workout.

From a UK based company, Trained by JP Pumpage prides itself on quality and transparency. The blend uses a Cell Swell Matrix with Citrulline, Glycersize glycerol and Himalayan pink salt to support hydration and blood flow. PeakO2 mushrooms bring a touch of adaptogenic support, while S7 provides a plant-based nitric oxide boost. The product is vegetarian and vegan friendly and designed to align with active lifestyles, skincare routines, and even protein powder use; it's not a Valentino perfume, but it aims to feel premium in your gym bag.

Energy, Fat, of which saturates, Carbohydrates, of which sugars, Protein, Fibre, Salt, L-Citrulline, Glycerol 65% Powder (as GlycerSize), Betaine Anhydrous, Taurine, Peak O2, Pink Himalayan Salt, S7

• GTIN: 654139338086
• Manufacturer: Trained by JP
• Size: Blue Slushy
• Categories: Sports SupplementsTrained by JP
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Mix one scoop of Trained by JP Pumpage, Blue Slushy - 400 grams with water and consume 20-30 minutes before your workout for optimal results. It can be taken at any time of the day, including at night, as it is stimulant-free. Store in a cool, dry place, away from direct sunlight and moisture. Keep out of reach of children. Do not exceed the recommended daily dose. If you are pregnant, breastfeeding, taking any prescribed medication, or have any medical condition, consult a healthcare professional before use.

Please consult the product packaging for accurate instructions on how to use the product.

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

L-Citrulline is an amino acid that helps to support nitric oxide production, contributing to better blood flow and a fuller muscle pump during workouts.

This ingredient sits in a stimulant-free pre-workout mix to aid hydration and nutrient delivery inside muscle tissue, recognised for its part in boosting vascular function and performance as part of a complete pump routine [which is important].

What Does L-Citrulline Do?

L-Citrulline helps with nitric oxide production, which can support blood flow and nutrient delivery to working muscles during training. Scientific research suggests benefits related to pump and endurance, aligning with EFSA and NHS-informed understanding of nitric oxide mechanisms.

This is where the evidence sits; Dr. Gonzales from University of Navarra found that citrulline can influence blood flow and performance parameters, reinforcing its role in exercise contexts [which matters].

This product isn't meant to diagnose, treat, cure, or prevent any disease.

JP Pumpage is Welzo chosen because this brand shows a solid commitment to quality and performance in a stimulant-free space. This UK-based outfit has earned a reputation for dependable, purpose-made supplements that help hydration and pump-focused results, aligning with our customers’ needs for clean, non-stimulant options. We recognise JP Pumpage as a brand with clear roots in performance support, backed by a heritage of formulating products made for athletes seeking effective, purpose-driven ingredients. Our medical team has reviewed this brand for alignment with our high standards, making sure the formulation choices stay suitable for our customers. This brand was thoroughly evaluated by our medical team for compliance with the certifications we require.

JP Pumpage’s approach emphasises thorough hydration and vascular support through its core ingredients, making the brand a natural fit for this particular pre-workout category. This combination of brand credibility and product compatibility helped us pick JP Pumpage as a prime partner for Welzo customers.