Optimum Nutrition Gold Standard Gainer – Premium Mass Gaining Formula. Fuel your physique with Gold Standard Gainer—a high-quality mass gainer crafted for those serious about size, strength, and recovery. With a robust blend of fast and slow-release proteins, complex carbs, and quality fats, this formula delivers the ultimate in performance nutrition for hard gainers and elite athletes alike.

Why You’ll Love It

• 55g premium protein from whey isolate, concentrate, milk isolate & hydrolysed isolate
• 770 calories per serve to support weight gain and lean mass development
• 112g of clean carbs from oat flour, pea starch & potato starch
• Powered by MCTs, chia, and flaxseed for added energy and metabolic support
• Balanced 2:1 carb-to-protein ratio for optimal recovery and muscle fueling
• Low in sugar – less than 10% per serving
• Informed Choice Certified – trusted by elite athletes
• Mixes easily and comes in delicious flavours

How to Use

• Between Meals: 1 scoop to support a high-calorie diet
• Post-Workout: 1–2 scoops 30–45 minutes after training for muscle recovery
• Before Bed: 1 scoop 45–60 minutes before sleep to support overnight muscle repair
• Mix with 300–600ml of water or milk for best results

Who It’s For
Ideal for hard gainers, athletes, and anyone needing high-calorie nutritional support to reach weight gain or muscle mass goals. Perfect for recovery, meal supplementation, or maintaining a calorie surplus.

Key Product Details

• Protein: 55g (primarily from isolate sources)
• Calories: 750–770 per serve
• Carbohydrates: 109–116g
• Fat Sources: MCTs, chia seed, flaxseed
• Blend Type: Multi-phase release of proteins and low-GI carbs
• Certified: Informed Choice (banned substance tested)

Step into serious size gains with the gold standard in mass gainers.. Optimum Nutrition Gold Standard Gainer gives your body the fuel it needs to recover, grow, and thrive.