PEScience High Volume

Vitamin C, L-Citrulline, Inositol-stabilized Arginine Silicate (as Nitrosigine)

United Kingdom & Rest of the World Shipping Details:
Same day dispatch for orders placed by 2pm (Orders after 2pm dispatched 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 14 days in the same original and unopened packaging. Subject to T&C's.

Welzo is a UK-based health platform. Orders ship from the UK.

For users 160 lbs or less, consume 1 scoop mixed in 8 oz of water 30 minutes prior to training. For users over 160 lbs, consume 1-2 scoops mixed in 8-12 oz of water 30 minutes prior to training. Store in a cool, dry place away from direct sunlight. Warning: Consult your physician before using this product if you are pregnant, nursing, taking any medications, or have any medical conditions.

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.

The Active Ingredient Is: L-Citrulline

L-Citrulline is a non-protein amino acid that helps boost nitric oxide production in the body, which supports steady blood flow and enhanced muscle function during activity.

This form is commonly sourced as free-form L-Citrulline and is used to support physiological processes related to blood flow and muscular function during activity, which many athletes rely on daily.

What Does L-Citrulline Do?

L-Citrulline helps increase nitric oxide bioavailability, which can support aerobic and resistance exercise performance and improve muscle oxygenation, in line with EFSA-supported interpretations of nitric oxide metabolism, which is helpful for training days.

This fact comes from Dr. Perez-Guisado of a university who found that acute L-Citrulline supplementation enhances nitric oxide availability and exercise capacity, which many users find motivating.

This product is not intended to diagnose, treat, cure, or prevent any disease.

PEScience brings a track record of evidence-led formulas and clear transparency. This brand is known in the sports nutrition space for full label disclosure and a commitment to clinically dosed ingredients, which fits our aim for clarity and accuracy at Welzo. Their stated commitment to current GMP standards underpins a strict manufacturing approach that prioritises safety and consistency across batches.

Our vetting process looked at brand credibility, manufacturing integrity, and product fit. PEScience’s focus on transparent ingredients, proven dosing for key actives, and a history of quality practices resonated with our criteria. We evaluate partnerships through compliance, purity, and reliability, consulting with our expert team of doctors, nurses, and nutritionists and making sure it aligns with our quality certification process.

This partnership makes PEScience High Volume a natural fit for a stimulant-free pre-workout designed to support pump and performance. The brand’s manufacturing standards and transparent formulation line up with Welzo’s commitment to trustworthy supplementation and thorough internal evaluation.