Description
Mutant Mass (5lbs) – Weight Gain Protein Powder
Mutant Mass is a high-calorie, whole-food–based mass gainer engineered for athletes, hard gainers, and anyone needing serious calorie support to build size and strength. Designed using natural, nutrient-dense ingredients, Mutant Mass delivers a powerful combination of clean carbohydrates, high-quality protein, and essential fats to fuel muscle growth and recovery. With exceptional taste and gold-standard manufacturing quality, it remains MUTANT’s #1 best-selling gainer for good reason.
Why You’ll Love It
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Massive 1,100 calories per serving to support rapid size and muscle gains
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56 g of high-quality protein from multi-source blend
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192 g of clean carbohydrates for sustained energy and glycogen replenishment
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Made with real whole foods: barley, sweet potato, rolled oats, avocado, coconut oil, flaxseed, pumpkin seed & sunflower oil
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Naturally contains 26.1 g EAAs and 12.2 g BCAAs for enhanced recovery
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Includes essential fatty acids (EFAs) for hormone health and performance
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Manufactured in MUTANT’s own state-of-the-art facility for consistency and purity
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Gourmet taste with smooth mixability
How It Works
Mutant Mass works by supplying the body with a superior ratio of calories, protein, carbohydrates, and essential fats—everything needed for accelerated muscle growth and improved training performance.
Key Mechanisms
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Calorie Surplus Support – Essential for mass gain; delivers over 1,100 nutrient-dense calories per serving.
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High Protein Intake – 56 g of multi-source protein provides both fast and slow-digesting amino acids to support muscle repair and growth.
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Clean Carbohydrates – 192 g of whole-food carbs replenish glycogen stores and fuel intense training.
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Healthy Fats & EFAs – Oils from coconut, flax, avocado, pumpkin seed and sunflower support hormones, energy, and joint health.
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Amino Acid Density – Naturally occurring EAAs and BCAAs optimize muscle protein synthesis and speed recovery.
This formula ensures your body stays in an anabolic (muscle-building) state throughout the day.
How to Use It
Add 24–32 fl oz (720–960 mL) of water to a blender or shaker cup, then mix in 4 scoops of Mutant Mass.
Blend or shake for 20–30 seconds.
Use once daily or as needed to meet calorie and protein goals.
The Bottom Line
Mutant Mass is a premium, whole-food–based mass gainer built to help you pack on serious size. With an unmatched calorie count, clean ingredient profile, and powerful amino acid content, it’s the go-to solution for hard gainers and athletes who demand real results.
Cited Sources
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Journal of the International Society of Sports Nutrition – Protein & carbohydrate synergy for mass gain
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Nutrients Journal – Role of EAAs/BCAAs in muscle protein synthesis
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American Journal of Clinical Nutrition – Importance of caloric surplus for hypertrophy
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Why Choose Stax Nutrition
1. Scientifically Backed Formulas
Stax Nutrition's products are crafted using cutting-edge research to maximize effectiveness. Whether you're aiming to build muscle, enhance endurance, or support recovery, their supplements are designed to deliver superior results.
2. High-Quality Ingredients
Quality is paramount at Stax Nutrition. Their protein powders, for instance, contain no fillers—just clean and effective protein sources. They offer both fast and slow-digesting options to support your body's needs pre- and post-workout.
3. Tailored Solutions for Every Goal
Whether you're a seasoned athlete or just starting out, Stax Nutrition provides tailored solutions to fit your needs. From muscle building and weight loss to healthy living and workout intensifiers, their product range caters to diverse fitness objectives.
4. Exclusive Deals and Bundles
Stax Nutrition offers attractive promotions like "Buy One Get One 50% Off" and discounted bundles, making it easier to stock up on your favorite supplements without breaking the bank.
5. Community-Centric Approach
Based in Elizabethtown, Kentucky, Stax Nutrition is more than just a supplement provider—they're a community hub for fitness enthusiasts. Their commitment to quality products and exceptional customer service has garnered them a loyal customer base.
With Stax Nutrition, you're not just purchasing supplements; you're investing in a healthier, stronger you. Explore their offerings and take the first step towards achieving your fitness goals.
Shipping Information
Shipping Policy for Stax Nutrition
At Stax Nutrition, we strive to ensure a smooth and efficient shipping process for our valued customers. Please review our shipping policy below for important details about how we handle your orders:
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Processing Time
All orders are processed and shipped within 2 business days of receiving cleared payment. Orders placed on weekends or holidays will begin processing the next business day. -
Shipping Costs
Shipping charges are calculated based on actual shipping costs, ensuring transparency and fairness. The total shipping cost will be displayed at checkout, so there are no surprises. -
No Handling Fees
We are committed to keeping your costs low. That’s why we never charge additional handling fees for packaging or processing your order. -
Shipping Methods
We partner with reliable carriers to deliver your products quickly and safely. The shipping options available at checkout are tailored to your location and order size. -
Delivery Times
Delivery times may vary depending on your location and the selected shipping method. Once your order is shipped, you will receive a confirmation email with a tracking number for your convenience.
If you have any questions about your order or need assistance, please don’t hesitate to contact us. Thank you for choosing Stax Nutrition!
Returns & Refunds
RETURN POLICY: Return unopened, unused item within 7 days of purchase date with receipt for full money back. After 7 days, you may send the unopened, unused item back within 30 days of purchase date for store credit. If the order involves shipping charges of any sort, the refund will NOT include and shipping charges that were paid on the initial order. *restrictions may apply*