Optimum Nutrition Gold Standard Isolate is a whey protein isolate that helps with lean muscle recovery after workouts and rebuilding lean mass. Each serving provides 25g of whey protein isolate and 5.5g of naturally occurring BCAAs to kick start muscle repair. Optimum Nutrition is renowned for quality, with GMP certified facilities and strict testing to keep products clean and trustworthy.

Available Sizes & Variants:

930g whey protein isolate - convenient tub with high purity for lean muscle support after workouts.

Benefits & Features:

• Delivers rapid amino acids after training.
• 25g whey protein isolate per serving fuels lean muscle repair.
• Minimal carbs and fats keep you aligned with lean muscle goals while supporting recovery.
• Ultra filtration reduces lactose, fat, and sugar to improve digestibility, while third party testing helps ensure purity and safety for athletes across all levels of training.
• Tasty flavors and easy mixing make daily use effortless, with minimal clumping.

Optimum Nutrition is widely recognised as the world's number one sports nutrition brand, built on decades of innovation and athlete trust. The Gold Standard Isolate line uses ultra filtration and partial hydrolysis to maximise amino acid delivery while keeping lactose and fat to a minimum, supporting quick digestion after training. Manufacturing takes place in GMP certified facilities with rigorous quality checks and third party testing, a testament to the brand's commitment to safety and performance. For those seeking the best protein powder, many customers also enjoy protein shakes as a convenient post-workout option.

WHEY Isolate Proteins [MILK] (95%) (WHEY Protein Isolate, Hydrolysed WHEY Protein Isolate, Emulsifier: SOY Lecithin), Flavourings, Thickener (Xanthan Gum), Sweetener (Sucralose), Colour (Curcumin).

• GTIN: 5060469987408
• Manufacturer: Optimum Nutrition
• Size: Vanilla
• Categories: Best SellersBodybuilding SupplementsBronzing DropsNew ArrivalsNew In Supplements & VitaminsOptimum NutritionSports 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.

For best results, consume this 110-calorie serving post-workout. With 25g of lean protein and minimal fat (0.4g), take within 30 minutes of exercise. Keep carbohydrate intake light at 1.3g per serving. Monitor salt levels at 0.22g per portion. Contains 0.3g fiber for digestive support.

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

The Active Ingredient Is: Whey Protein Isolate

Whey protein isolate is a high-purity protein derived from milk, providing essential amino acids important for body function and tissue support.

This form is ultra-filtered and hydrolysed for rapid digestion and absorption, with a lean protein content that minimises lactose, fat and sugars described in the product context.

What Does Whey Protein Isolate Do?

Dr. Tang of the University reports that post-exercise whey protein isolate supports muscle protein synthesis by delivering essential amino acids rapidly, aiding muscle repair after activity.

In line with EFSA guidance on protein functions, whey protein helps maintain normal muscle mass and contributes to recovery processes following strenuous exercise.

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

Protein:25g ,Carbohydrates:1g ,Fat:1g

Why Optimum Nutrition Gold Standard 100% Isolate is Welzo Selected. This brand is recognised as a global leader in sports nutrition with a long-standing reputation for reliability, innovation and consumer trust. Our evaluation team valued Optimum Nutrition for its established heritage, continuous commitment to quality and transparent manufacturing practices that support safe, consistent products. This brand is known for its strict quality assurance and routine audits, with a clear emphasis on purity and safety in its GMP-certified facilities. Our team of medical experts has assessed their approach to product integrity and endorses their alignment with Welzo’s standards for ingredient quality and safety, which you can explore through how we verify ingredient quality. The brand’s post-exercise protein isolate formulation, designed for rapid amino acid delivery, makes it a strong fit for this supplement category, aligning with Welzo’s product needs and consumer expectations. This match was confirmed by our team of medical experts during our rigorous brand review.