GNC Pro Performance Bulk 1340 Mass Gainer - High-Calorie Muscle Fuel

In this review the GNC Pro Performance Bulk 1340 Mass Gainer is evaluated as a targeted option for lifters and hard-gainers who need a straightforward, high-calorie solution. The bottom line: it delivers an unusually dense calorie and protein payload to support rapid size increases, with 1,340 calories and 50 g of whey protein per serving that make it best for serious mass-building phases. The blend of whey, creatine, BCAAs and glutamine gives it a complete recovery profile, while third-party banned substance testing offers extra confidence for competitive athletes.

Key Features

• High-calorie formula: Each serving supplies 1,340 calories to help users push daily energy intake well above maintenance for rapid mass gain.
• Protein-rich: The powder provides 50 g of high-quality whey protein per serving to support muscle growth and repair after intense training.
• Creatine included: Contains 1 g of creatine to help support muscle energy production during demanding workouts.
• Amino support: Delivers naturally occurring BCAAs and 10 g of glutamine to aid recovery and support immune and muscle health.
• Banned substance tested: Third-party testing for banned substances increases trust for athletes concerned about contamination.

Who It's For

The Bulk 1340 is aimed at experienced lifters, athletes in a mass-gaining phase, and anyone with a very high daily calorie need who struggles to consume enough food. Its dense macro profile is useful for people who want an efficient way to add weight and calories without multiple meals.

It is less suitable for casual gym-goers, those seeking a light post-workout shake, or people on calorie-restricted plans. Those who prefer cleaner, lower-calorie increments or who are sensitive to concentrated powders should consider smaller mass gainers or individual protein plus carb sources instead.

Pros & Cons

Pros

• Extremely calorie-dense for fast weight gain and convenient high-calorie meals.
• High-quality whey protein and 10 g glutamine support recovery and muscle growth.
• Includes creatine and BCAAs to aid workout performance and repair.
• Banned substance testing provides added assurance for competitive athletes.

Cons

• Mixability is inconsistent for some users, making it harder to blend into a smooth drink.
• Not appropriate for those wanting moderate calories or a light, daily protein shake.

Specifications

Brand	GNC Pro Performance
Calories per serving	1,340
Protein per serving	50 g whey protein
Creatine	1 g per serving
Key amino acids	BCAAs and 10 g glutamine
Third-party testing	Banned substance tested (LGC protocol)
Flavor	Double Chocolate

Our Verdict

For lifters and hard-gainers who need a no-nonsense, high-calorie mass gainer, Bulk 1340 delivers strong value with its 1,340 calories, 50 g of whey, creatine and recovery nutrients. It is a practical choice when rapid weight gain is the goal, though those seeking lighter or more easily mixed options should look elsewhere.

Frequently Asked Questions

How much protein does one serving provide?
Each serving provides 50 g of high-quality whey protein to support muscle growth.

Is this product third-party tested?
Yes, Bulk 1340 was tested for banned substances using LGC testing protocols for added athlete assurance.

Will it help me gain weight quickly?
Yes, the 1,340 calorie serving is designed to increase daily calorie intake markedly, which supports rapid mass gain when paired with a proper training program.