Optimum Nutrition Platinum Pre-Workout is a heavily dosed pre workout that helps you push through tough sessions with sharper focus and longer energy. Core ingredients feature L-Citrulline, Beta-Alanine and caffeine. This brand backs its formula with strict manufacturing standards and quality control (and traceable testing). That makes it ideal for dedicated athletes who want steady energy and focus.

Available Sizes & Variants:

420g pre workout - standard tub for daily training

Benefits & Features:

• Delivers a clean energy boost for peaks and endurance
• Core ingredients work together to boost blood flow, delay fatigue and support muscle recovery
• Robust manufacturing standards mean each scoop delivers consistent potency and quality
• Perfect for everyday use as a best pre workout when you need focus and energy
• Caffeine supports focus and energy, helping you push through demanding sessions

Optimum Nutrition is known for its rigorous quality standards, operating GMP certified facilities and performing robust quality assurance on every batch. Platinum Pre-Workout combines a precise blend of L-Citrulline, Beta-Alanine, caffeine and L-Leucine, engineered to support blood flow, endurance and focus during demanding sessions. The brand's long heritage in sports nutrition and commitment to purity helps you train with confidence, knowing you’re getting a consistently potent formula backed by trusted manufacturing practices. It sits in the pre workout category, not a protein powder for muscle gain, and complements muscle growth goals.

L-Citrulline, Beta-Alanine, L-Leucine, Acids (Citric Acid, Malic Acid, L(+)-Tartaric Acid), Flavourings, Anti-Caking Agents (Calcium Silicate, Silicon Dioxide), N-Acetyl-L-Carnitine, N-Acetyl-L-Tyrosine, Colours (Curcumin, Beta Carotene), PerforMelon Watermelon Juice Powder, Inulin, Sweeteners (Acesulfame K, Sucralose), Natural Caffeine, L-Theanine, Grape Extract (Vitis vinifera, Seed), Pyridoxine Hydrochloride, Black Pepper Extract (Piper nigrum, Fruit), Nicotinamide, Calcium D-Pantothenate, Cyanocobalamin.

• GTIN: 748927056075
• Manufacturer: Optimum Nutrition
• Categories: Bodybuilding SupplementsCHECKOUT UPSELLNew ArrivalsNew In Supplements & VitaminsOptimum NutritionPre Workout SupplementsSports Supplements
• 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.

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

L-Citrulline is an amino acid that helps support typical blood flow and energy production during workouts.

This form is sourced as a natural amino acid; this formula positions L-Citrulline as the main active ingredient, with other ingredients aiding its role in muscular endurance.

What Does L-Citrulline Do?

L-Citrulline helps to support nitric oxide production, and this helps support better blood flow to muscles while you train.

It engages in energy processing and helps sustain performance by backing vascular and muscular function during intense exercise.

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

Optimum Nutrition teamed up with Welzo's strict partner criteria from the start. The brand's reputation rests on manufacturing excellence, with GMP-certified facilities and solid quality assurance that guarantees purity, potency and label accuracy across batches. This commitment to quality puts Optimum Nutrition at the forefront of sports nutrition and supports steady performance across markets, including the UK. This brand was assessed by our expert team of doctors, nurses, and nutritionists for compliance with our quality assurance criteria, and the result highlighted their industry leadership in manufacturing standards and regulatory compliance.

Welzo chose Optimum Nutrition because its pre-workout blend is built to deliver high-dose ingredients that fuel energy, focus and muscular endurance, backed by a heritage of thorough quality control. This brand stands out from competitors through its steady manufacturing performance and established reputation for meeting major regulatory standards. The collaboration is especially well-suited for the British market, reflecting trusted supply chains and global quality practices that align with Welzo’s mission to offer dependable, science-backed supplements.