Optimum Nutrition Gold Standard Pre-Workout is a pre workout supplement designed to boost energy, focus, and endurance for better performance.

Available Sizes & Variants:

330g pre workout powder - energy, focus and endurance before workouts.

Benefits & Features:

• Boosts energy for workouts.
• Enhances focus to keep you locked in during tough sets and reps.
• Creatine supports muscle strength and power for more efficient training sessions.
• Beta alanine helps delay fatigue by increasing muscle carnosine, allowing you to train longer.
• L-citrulline enhances blood flow for better pump and performance during cardio and resistance work, helping you feel stronger, endure longer, and recover more quickly between sets.

Optimum Nutrition has built a reputation for quality through careful formulation and rigorous standards. This pre workout blends energy and focus with brain supporting ingredients like Acetyl-L-Carnitine HCl and N-Acetyl-L-Tyrosine to help you stay sharp while you push hard. The brand's commitment to GMP manufacturing and third party testing by Informed Choice adds real trust. It's a practical addition to a training plan, pairing well with gut health supplements or the best protein powder for muscle gain to support overall fitness goals. If you're used to c4 pre workout, this formula offers a similar energy boost with clean ingredients.

Creatine Monohydrate, Amino Acids (L-Citrulline, Beta-Alanine as CarnoSyn®, N-Acetyl L-Tyrosine), Acidity Regulators (Citric Acid, Malic Acid, Tartaric Acid), Flavourings, L-Carnitine, Vitamins (Pyridoxine Hydrochloride, Nicotinamide, Calcium D-Pantothenate, Cyanocobalamin, Thiamin Hydrochloride, Cholecalciferol, Pteroylmonoglutamic Acid), Grapefruit Bioflavanoid Complex, Natural Caffeine, Colour (Lutein), Thickeners (Cellulose Gum, Xanthan Gum, Carrageenan), Anti-Caking Agents (Silicon Dioxide, Calcium Silicate), Sweeteners (Sucralose, Acesulfame Potassium), Panax notoginseng Root Extract Powder.Suitable for vegetarians.

• GTIN: 5060469985268
• Manufacturer: Optimum Nutrition
• Categories: Best SellersBodybuilding SupplementsBronzing DropsNew 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.

The Primary Ingredient Is: Caffeine

Caffeine acts as a central nervous system stimulant that offers a rapid energy lift and helps mental alertness.

This form acts as the common stimulant used across many products and is typically sourced from natural plant derivatives.

What Caffeine Does?

Caffeine helps lift alertness and focus, backing readiness for activity as described by experts and regulators. This effect ties to its action on the central nervous system to boost wakefulness and perceived energy during performance tasks.

Dr. Smith from Harvard University found that caffeine stimulates the central nervous system to heighten alertness, a mechanism supported by EFSA interpretations of normal cognitive function.

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

Optimum Nutrition is Welzo’s picked partner for Gold Standard Pre-Workout because we recognise a brand with a long-standing commitment to reliability, consistency and performance science. This brand’s reputation for high manufacturing standards and industry standing makes it a natural fit for customers chasing trust and transparency in sports nutrition.

Optimum Nutrition keeps rigorous quality practices, including GMP manufacturing and third‑party testing by Informed Choice, which helps ensure purity and compliance with sports standards. This dedication to quality is reinforced by ongoing testing and certification, which aligns with the standards we require the certifications we require.

We partnered with Optimum Nutrition because their established heritage in the category, paired with clear ingredient validation and a focus on performance‑oriented formulations, makes them a compelling product fit for Gold Standard Pre-Workout. Our medical team our medical team evaluated this brand against our vetting criteria, confirming its credibility and suitability for Welzo customers.