
Instant Mass® Heavyweight
by Reflex
Calories that count: a high-protein, high-carb formula built for serious muscle and weight gain.
- 20g protein per 100g
- Low fat — under 3g per 100g
- High calorie for bulking phases
- For shakes, smoothies, baking and more
Best price today
In stockNutrition Now
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Cheapest today · 5.5kg · Chocolate Perfection
£64.99
£1.18 / 100g
Secure retailer checkout
Price checked this weekCompared across 1 retailer5 in stock
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Nutritional profile
What's inside
Values per 100g
20g protein
Protein per 100g of product
68g carbohydrates
Carbohydrates per 100g of product

2g fat
Very lean profile
373 kcal
Energy per 100g of product
20g protein
Protein per 100g of product
68g carbohydrates
Carbohydrates per 100g of product
2g fat
Very lean profile
373 kcal
Energy per 100g of product

Frequently asked questions
Where is the cheapest place to buy Reflex Instant Mass® Heavyweight in the UK?
Based on today's prices, Nutrition Now is the cheapest at £1.18 per 100g for the 5.5kg bag. WheyWise checks prices weekly across 1 UK retailer stocking this product.
How much protein does Instant Mass® Heavyweight contain per 100g?
Instant Mass® Heavyweight contains 20g of protein per 100g. It is a mass gainer product.
Is Reflex Instant Mass® Heavyweight currently in stock?
As of today, 5 out of 6 tracked variants are in stock. Stock status is updated weekly.
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