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ON Gold Standard 100% Whey Protein Powder Chocolate 4kg is a high-quality whey protein supplement designed to support muscle recovery, strength building, and daily protein intake for athletes and fitness enthusiasts. Powered by ultra-filtered whey protein isolate as the primary ingredient, each serving delivers 24g of protein along with 5.5g of naturally occurring BCAAs to help support lean muscle growth and post-workout recovery. The smooth chocolate flavour offers a rich taste experience, while the instantized formula ensures easy, lump-free mixing with water or milk. Tested through the Informed-Choice programme, this protein powder provides added assurance for competitive athletes. With approximately 130 servings in a massive 4kg tub, it is ideal for long-term supplementation and consistent training support.
For optimal muscle recovery and nitrogen balance, follow these steps:
Pro Tip: For a thicker, more indulgent chocolate shake, mix with 150ml of cold almond milk and a few ice cubes.

Have a query?
ON Gold Standard 100% Whey Chocolate 4kg uses Whey Protein Isolate (WPI) as its primary ingredient. WPI is the purest form of whey protein, stripped of excess fat and lactose. This results in a faster-absorbing, highly bioavailable protein that delivers 24g of protein and 5.5g of BCAAs per scoop to maximise muscle recovery.
Every genuine ON product comes with an MRP label featuring a scratch code. You can verify your product's authenticity by scratching the panel and entering the unique code on the official Optimum Nutrition authentication website or via the SMS number provided on the seal.
Because the primary ingredient is Whey Protein Isolate, much of the lactose has been filtered out. Many people with mild lactose sensitivity tolerate it well. However, if you have severe lactose intolerance, you should consult your doctor or opt for a 100% plant-based or purely hydrolysed protein.
No. Weight gain occurs from a caloric surplus. ON Gold Standard Whey is formulated to be lean, containing only 120 calories, 1.5g of fat, and 3g of carbs per serving. When combined with regular exercise, it supports lean muscle growth, not fat accumulation.
For most physically active healthy adults, 1 to 2 scoops per day is sufficient. The exact amount depends on your body weight, activity level, and the amount of protein you already consume through whole foods in your daily diet.
Yes, daily consumption of whey protein is clinically safe for healthy adults. It is simply a convenient, high-quality food source derived from cow's milk. Ensure you stay well-hydrated throughout the day.
Absolutely not. ON Gold Standard Whey is Informed-Choice Certified. This globally recognised certification means the product is regularly tested by an independent laboratory for a wide range of substances banned in professional sports.
Yes, it is highly recommended for beginners. Whether you are doing light resistance training, running, or intensive bodybuilding, providing your muscles with adequate protein is essential for recovery and preventing severe muscle soreness.
Both are excellent options. Mixing with cold water ensures the fastest absorption, making it ideal immediately post-workout. Mixing with milk slows down digestion slightly and increases the total calorie and protein content, making it a great option for a morning or bedtime shake.
Whey protein is generally well-tolerated. However, exceeding recommended doses without adequate water intake or fibre in your diet may lead to mild digestive issues like bloating or gas in some individuals. Stick to the recommended dosage.
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