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Lean Impact Mass Gainer

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• Sustained-Release Protein Formula                                 • Muscle Recovery and Growth

• 51 Grams of Protein                                                           • No Added Sugar-Fortified with Fiber

• 590 Calories per Serving                                                   • Only 7 Grams of Sugar 

BIG DOG’s LEAN IMPACT MASS GAINER is a highly nutritious, sustained- release premium protein supplement with an increased proportion of fast- acting complex carbohydrates and some good fats, designed to help “hardgainers” increase weight, muscle mass and strength, while maintaining a relatively low level of body-fat.

Increasing body weight requires a calorie surplus of at least 300 to 500 cal per day beyond what is used up through exercise and one’s daily routine, and it is vital that this caloric surplus comes from beneficial high-quality nutrients to prevent unwanted fat gain.

Despite training hard and regularly, many athletes and avid gym-enthusiasts have problems to increase mass and size, as they simply fail to consume the required daily amount of calories in form of the right macronutrients to achieve the desired gains. And indeed, it can be a challenge to eat sufficient proteins, carbohydrates and fats in form of whole foods on a daily basis in order to achieve the required caloric surplus to promote mass gains.

Consuming liquid nutrition in the form of a high calorie nutrient-concentrated weight gain supplement can make meeting one’s calorie requirements much easier.

Many common weight gain supplements on the market provide 1000 cal. per each serving; they are loaded with sugars and are fairly low in protein, which makes them cheap to manufacture. Consuming just one or two such shakes per day can easily lead to overshooting the required calorie intake and result in rapidly putting on mass in form of unhealthy and unsightly bodyfat, which can never be in the best interest of any athlete.

That’s why BIG DOG’s LEAN IMPACT MASS GAINER takes a different approach. Supplying a medium-high amount of 590 cal. per each serving, LEAN IMPACT MASS GAINER is ideal to help support a moderate daily calorie surplus instead of a too rapid excessive calorie surplus. Supplying 77 g of low- glycemic complex carbohydrates and 51 g of sustained-release protein per serving, LEAN IMPACT MASS GAINER provides a well-balanced 1.5 : 1 ratio of carbs to protein, which is significantly more protein than most other weight gainers contain. The included saturated fats – mainly medium chain triglycerides -, play many roles at the cellular level that are important for building muscles.

LEAN IMPACT MASS GAINER’s lower amount of sugars, its adequate amount of calories, and the superior quality of all supplied nutrients support a “lean bulk”, promoting mass and size gain at a slightly more gradual pace than some other common weight gain products, but in turn predominantly in form of lean muscle tissue, while keeping unwanted fat gain at bay.

Anyone, who is really struggling to put on mass and size, can take almost any mass gainer supplement and will put on body weight.

Anyone, who is struggling to put on mass and size, but wants to make sure that the newly added body weight is primarily lean muscle tissue, should exclusively rely on BIG DOG’s LEAN IMPACT MASS GAINER.

When compared to other weight gainers, BIG DOG’s LEAN IMPACT MASS GAINER will simply give you the edge you need to take your muscle building to a whole new level.


  •   makes meeting high calorie requirements to promote muscle gain far easier;
  •   consumed as a pre-work-out supplement, its carbohydrates provide a source of high quality, muscle-sparing fuel, which supports maintaining high exercise intensity;
  •   consumed as a post-work-out supplement, its high protein content contributes to muscle repair and growth, while its fast acting carbohydrates drive the insulin cycle and get the amino acids into the muscle cells quickly;
  •   helps best in the recovery of muscles, when consumed before and after training: the combination of carbohydrates and proteins can reduce muscle damage.
  •   can serve as a great meal replacement due to its well-balanced nutrient content;
  •   supports training harder or longer due to its concentrated supply of high quality nutrients and ample amount of calories;

Most hardgainers, who need to increase mass and size, take LEAN IMPACT MASS GAINER between meals, or with any meal, which doesn’t offer adequate nutrition in form of high quality proteins and carbohydrates. It could also be taken in the morning to instantly boost calorie intake. On work-out days, the best times to consume a tasty shake of LEAN IMPACT MASS GAINER may be an hour before and immediately after training to reduce muscle damage and kickstart muscle repair and growth. Lean IMPACT MASS GAINER comes in the delicious flavors chocolate and vanilla and is the most enjoyable, nutritious and effective way to get the high quality calories required to gain lean muscle mass.

Typical amino acid profile (In grams) per 100 grams of protein.

 Alanine              4.68 Lysine                   8.74
Arginine             2.78 Methionine          2.08
 Aspartic Acid 10.28 Phenylalanine     3.37
Cystine               1.94 Proline                 6.25
Glutamine       17.01 Serine                   4.87
Glycine              1.87 Threonine            6.65
Histidine          1.97 Tryptophan         1.70
Isoleucine        5.94 Tyrosine               2.93
Leucine          10.31 Valine                   5.99

Over 11 grams – naturally occurring BCAA’s

Leucine  5.25g
Isoleucine 3.02g
Valine 3.05g
over 8.5 grams – Glutamine
Arginine 1.4g
Also Added – Lean Muscle Stack™ (L-Leucine, L-isoleucine, L-Valine, L-Glutamine)
                    CHOCOLATE                                            VANILLA
For Other products which can assist with weight maintenance

Balanced Non-Proprietary Blend – Best Quality Protein

45% WHEY, 45% CASEIN & 10% EGG WHITE

BUILD SERIES PRO is a premium protein blend of 45% Whey, 45% Micellar Casein & 10% Egg White. This blend does not hide the protein ratios as in a ‘proprietary blend’ and it has been  formulated to be the best-tasting protein anywhere.


Weight 9.64375 lbs
Dimensions 11.5 × 8 × 8 in

Chocolate, Vanilla


9 pounds

Flavours & Nutritional Facts


Supplement Facts


Vanilla Bean

Supplement Facts

1 review for Lean Impact Mass Gainer

  1. Jack

    Great product, flavors 100%. As it is claimed I am not experiencing the extra fat that I have noticed with other gainers. I think this is a more solid approach.

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Disclaimer : Please note that all comparisons mentioned herewith have been compiled based on product information available from product brochures/website and actual packaging when able.. All efforts have been made to accurately and fairly represent each product. No bias or opinions on any products are represented. For any queries please feel free to contact us at info@bigdogsportsnutrition.com

Lean Impact Mass Gainer

Gold Standard Gainer

Bulk Muscle XL




9 lbs
10 lbs




51 Grams of Protein Per Serving          

590 Calories per Serving

Only 7 Grams of Naturally Occurring Sugar 

No Added Sugar – Fortified with Fiber

Sustained-Release Protein Formula

Muscle Recovery and Growth

over 11 grams – naturally occurring BCAA’s

Leucine  5.25g
Isoleucine 3.02g
Valine 3.05g
over 8.5 grams – Glutamine
Arginine 1.4g
also added – Lean Muscle Stack™ (L-Leucine, L-isoleucine, L-Valine, L-Glutamine)


55 grams of protein per serving

760 Calories

Complete Proteins From Primarily Isolate Sources

Complex Carbohydrates Oat, Pea & Potato

Fats From Flax, Chia & MCTs

Mixes Easily Into Cold Water or Milk

Banned Substance Tested

820 Calories

50g Mass-Building Protein*

Low in fat and sugars

Mixes Effortlessly*

BULK MUSCLE XL™ is a Lean HARDCORE Muscle Building Gainer. It delivers more protein, more carbohydrates, more calories and more quality LEAN MUSCLE in a powerful 3 scoop punch. Our amino profile is second to absolute none and provides substantial growth, recovery, and strength when you need it most. It is a monumental hardcore GAINER profile that helps to support even the most strenuous and intense workouts.*

key supplement facts

Serving Size: 150g
Calories 590
Total Fat 6g
Saturated Fat 3g
Trans Fat 0g
Cholesterol 105mg
Sodium 240mg
Potassium 360mg
Total Carbohydrate 79g
Dietary Fiber 5g
Total Sugars 7g
Added Sugars 0g
Protein 51g
Serving Size: 150g
Calories 770
Total Fat 11g
Saturated Fat 5g
Trans Fat 0g
Cholesterol 70mg
Sodium 550mg
Potassium 600mg
Total Carbohydrate 116g
Dietary Fiber 3g
Total Sugars 12g
Added Sugar 0g
Protein 55g
Serving Size: 215g
Calories 820
Total Fat 6g
Saturated Fat 3.5g
Trans Fat 0g
Cholesterol 165mg
Sodium 320mg
Potassium 492mg
Total Carbohydrate 141g
Dietary Fiber 0g
Total Sugars 9g
Added sugar 1g
Protein 50g

Additional ingredient information

Ingredients: Lean Glyco Stack™ (Our special combination of complex carbohydrates and fibre blend: low glycemic index maltodextrin, fructooligosaccharides (FOS)), Lean Nitro Stack™ (Our special protein consisting of: 100% microfiltered and ultrafiltered whey protein concentrate, cross flow microfiltered, diafiltered and ultrafiltered whey protein isolate, micellar casein, instantized calcium caseinate, total milk protein), Lean Muscle Stack™ (L-Leucine, L-isoleucine, L-Valine, L-Glutamine), natural and artificial flavours, xanthan food gum, carrageenan, sucralose, acesulfame potassium.

Protein Blend (Whey Protein Isolate, Whey Protein Concentrate, Milk Protein Isolate, Hydrolyzed Whey Protein Isolate), Carbohydrate Blend (Oat Flour, Pea Starch [Carb10®], Potato Starch), Maltodextrin, Natural And Artificial Flavor, Medium Chain Triglycerides, Creamer (Sunflower Oil, Corn Syrup Solids, Sodium Caseinate, Mono & Diglycerides, Dipotassium Phosphate, Tricalcium Phosphate, Soy Lecithin, Tocopherols), Lecithin, Flaxseed Protein, Salt, Milled Chia Seed, Gum Blend (Cellulose Gum, Xanthan Gum, Carrageenan), Gum Arabic, Sucralose.

Maltodextrin, Whey protein concentrate,Cocoa (processed with alkali) Natural and artificial flavors ,Soy lecithin, Salt, Acesulfame potassium, and sucralose.

What is important?


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Supplement Facts
Amount Per Serving %Daily Value
Calories 590
Fat 6 g 9 %
Satued 3 g
+ Trans 0 g 15 %
Cholesterol 105 mg
Sodium 240 mg 10 %
Potassium 360 mg 10%
Carbohydrate 77 g 26 %
Fibre 5 g 8 %
Sugars 7 g
Protein 50 g
Vitamin A / Vitamine A 6 %
Thiamin 16%
Riboflavin 21%
Vitamin B-12 52 %
Pantothenic Acid 1 %
Calcium 39 %
Iron 18 %
Phosphorus 31 %
Iodine 25 %
Magnesium 9 %
Zinc 5 %
Chloride 2 %
Supplement Facts
Amount Per Serving %Daily Value
Calories 580
Fat 6 g 9 %
Saturated 3 g
+ Trans 0 g 15 %
Cholesterol 105 mg
Sodium 240 mg 10 %
Potassium 360 mg 10%
Carbohydrate 79 g 26 %
Fibre 2 g 8 %
Sugars 7 g
Protein 51 g
Vitamin A / Vitamine A 4 %
Thiamin 18%
Riboflavin 24%
Vitamin B-12 58 %
Pantothenic Acid 1 %
Clacium 41 %
Iron 3 %
Phosphorus 25 %
Iodine 28 %
Magnesium 9 %
Zinc 1 %
Chloride 2 %