Gold Standard 100% Isolate Whey Protein by Optimum Nutrition

Optimum Nutrition Gold Standard 100% Isolate is a premium whey protein isolate (WPI) supplement designed for maximum protein purity, fast digestion, and minimal carbs/fats.

• Uses ultra-filtered whey protein isolate + hydrolysed isolate
• Delivers ~25g protein per serving
• Very low in fat (<1g) and carbs (~1g)

This is essentially the “cleaner, leaner” version of their classic Gold Standard Whey.

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How It Works

1. Fast Absorption

• Whey isolate is rapidly digested - quick amino acid delivery to muscles
• Hydrolysed protein = partially broken down - even faster uptake

2. Muscle Protein Synthesis

• Provides essential amino acids + BCAAs (~5.5g)
• Stimulates muscle repair and growth post-training

3. Lean Nutrition Profile

• Minimal lactose, fat, and carbs - ideal for cutting or lean muscle gain

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Key Benefits

Lean Muscle Growth & Recovery

• High-quality protein supports muscle repair after training
• Ideal post-workout or to hit daily protein targets

Fast-Digesting Protein

• Great for post-workout window when rapid absorption matters

Low Carb / Low Fat

• ~1g carbs and <1g fat per serving
• Suitable for cutting, recomposition, or low-carb diets

High Amino Acid Content

• ~11g essential amino acids + glutamine support recovery and immune function

Better for Lactose Sensitivity

• Whey isolate contains less lactose than concentrate - easier digestion for many users

Who It’s Best For

• Cutting / fat loss phases - minimal calories, high protein
• Lean muscle building without extra carbs/fats
• People sensitive to lactose
• Athletes wanting fast recovery protein

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Pros & Cons

Pros

• Very high protein purity (80%+)
• Fast absorption (isolate + hydrolysed blend)
• Low lactose, carbs, and fat
• Trusted brand with Informed Choice testing

Cons

• More expensive than standard whey blends
• Slightly less creamy taste vs concentrate proteins
• Not necessary if you don’t need ultra-low carbs
  
  

Isolate vs Regular Whey (Quick Insight)

• Isolate (this product): leaner, faster, cleaner
• Standard whey: cheaper, slightly more carbs/fat, slower digestion

If your goal is performance + aesthetics (lean physique) - isolate is the better pick