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Metabolic Nutrition

Metabolic Nutrition, MuscLean, Lean Muscle Weight Gainer, Peanut Butter Milkshake, 5 lb

Metabolic Nutrition, MuscLean, Lean Muscle Weight Gainer, Peanut Butter Milkshake, 5 lb

Regular price $118.79 USD
Regular price $118.79 USD Sale price $118.79 USD
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Product Overview


  • Physician Formulated
  • Superior Muscle Building Formula - Formulated for "Hard Gainers"
  • Build Lean Muscle & Accelerates Metabolism
  • Perfect for Keto Dieting, Pre-Contest, Prep & Re-Feed Cycles
  • Satisfies Hunger and Food Cravings with Delicious Milkshake Flavor
  • Low Carbohydrates, Low Sugar, Low Glycemic Index
  • Zero Lactose, Zero Aspartame, Zero Trans Fat, Gluten Free
  • High Protein - Low Carb
  • Dietary Supplement
  • Be the Best

MuscLean is changing the game on traditional weight gainers. Metabolic Nutrition recognizes that it is not "weight" that you want to gain, rather, you desire to develop lean, hard muscle...all the while, minimizing the accumulation of fat. While traditional weight gainers simply pack on the calories with empty carbohydrate/sugar, MuscLean takes a better approach by combining proven science with macro + micro nutrient technology to help you maximize lean muscle mass, gain muscle weight, improve metabolic functioning, increase strength, while minimizing body fat with a clean calorically dense formula that has very little carbohydrates, MuscLean stimulates muscle development greater than any other weight gainer, making it a critical must have supplement to as consumers who are looking to preserve or maximize their lean muscle mass.

MuscLean differs from traditional weight gainers with a specific "muscle-targeted" approach to weight gain by rapidly increasing lean muscle mass while boosting metabolism providing a faster and more efficient way to add desired lean muscle.

Dedicated to manufacturing high quality nutritional supplements, backed by scientific research and formulated by a medical doctor, Metabolic Nutrition is the first to introduce a revolutionary lean "muscle" weight gainer designed with high protein, healthy essential fats and low carbohydrates to make it the only true Lean Muscle Gainer of its kind in the marketplace. We introduce to you MuscLean - acclaimed by physicians, athletes and consumers alike. MuscLean's ground breaking formula stimulates lean muscle gain by positively optimizing your body's good hormones' (growth hormone & insulin) response to key macro + micro nutrients while eliminating the effects of catabolic bad hormones (cortisol).

In scientific terms, the secret lies within the uniquely formulated composition and structure of MuscLean, which differentiates it from all the other typical high-carbohydrate / sugar weight gainers.

  • MuscLean's exceptional engineering process preserves the essential protein-peptide structure to improve its potency and effectiveness by encapsulating the protein with 7 of the most powerful and healthy essential fatty acids (rich in Omega 3.6.9 Fatty Acids) which are critical to preserving, stimulating and building lean muscle.
  • Additionally, MuscLean's protein molecules are coated with 8 specifically chosen digestive enzymes which dramatically increase digestion and enhance absorption, thereby eliminating gastric distress and bloating that is common with standard weight gainers.
  • To further enhance your results, MuscLean is fortified with 24 essential vitamins and minerals fueling additional muscle building, stress recovery, and immune boosting ingredients to enhance overall health and wellness.

MuscLean is scientifically engineered for those looking to maximize their health and performance with an uncompromising demand for superior quality.

Expiration Date

06/01/2026 00:00:00




A proprietary blend of ultra 10x-microfiltered enzymatically hi-absorption whey protein isolate and whey protein concentrate (containing highest levels of bio-active immunoglobulins: beta-lactoglobulin (55%-65%), alpha-lactalbumin (18%-25%), immunoglobulin (9%-12), bovine serum albumin (6%-10%), lactoferrin (1%-1.5%), sodium caseinate, essential fatty acid (EFA) omega 3+6+9 lipid complex (containing health fats from sunflower oil, medium chain triglycerides, high oleic safflower oil, borage oil, evening primrose oil, extra virgin olive oil, flax seed oil, maximum potency digestive enzyme complex (comprising of amylase, protease, cellulase, galactohydrolase lactase, lipase, betaine, pepsin and papain), vitamin mineral blend (consisting of ascorbic acid, beta carotene, biotin, d-calcium pantothenate, folic acid, niacinamide, pyridoxine hydrochloride, riboflavin, thiamine mononitrate, vitamin A palmitate, cyanocobalamn, cholecalciferol, tocopheryl acetate, phytonadione, chromium copper, calcium, ferric orthophosphate, magnesium oxide, manganese sulfate, molybdenum dipotassium & dicalcium phosphate, potassium iodide, selenium, zinc oxide), lecithin, xanthan gum, guar gum, natural and artificial flavors, sucralose.

Product contains whey and milk proteins.

Allergen warning: Manufactured in a plant that also processes egg, soy, peanut, tree nut, fish, crustaceans/shellfish, and wheat products.

Suggested Use


As part of a muscle maintenance solution, add 1-2 scoops of MuscLean to 6-12 oz of cold water and shake or mix. For maximum results consume MuscLean once daily as a part of your healthy diet and training regimen.

Weight Lifting

As a part of a weightlifting or strength and conditioning routine, add 2-3 scoops of MuscLean to 12-18 oz. of cold water and shake or mix. For maximum results consume MuscLean twice daily. Immediately following exercise and late evening before bedtime.

Weight Gainer

 As part of a weight gainer or bodybuilding program, add 3 scoops of MuscLean to 18 oz. of cold water and shake or mix. For maximum results consume MuscLean 2-3 times daily in between regular meals. 3 max servings per day will deliver over 180 grams of healthy, clean protein and all the nutrients you need to build solid muscle.


Do not exceed recommended dose. Not intended for use by persons under the age of 18, those with a medical condition, or those with a history of kidney disease. Do not use if pregnant or lactating. If you are under the care of a physician, please consult your physician before using this product. Do not use if tamper resistant seal is broken.

Keep out of reach of children. Store in a cool, dry place and avoid excessive heat.

Persons with mild to severe milk allergies should get approval from your doctor prior to consuming this product. 

Nutrition Facts
Choose Your Goal
Weight Gainer
Serving Size:
1 Scoop (45 g)
2 Scoops (90 g)
3 Scoops (135 g)
Servings Per Container:
50* 25* 17*

Amount Per Serving
%Daily Value Amount Per Serving
%Daily Value Amount Per Serving
%Daily Value
Calories (total) 224   448   672  
Calories (from fat) 126   252   378  
Total Fat 14 g 22% 28 g 43% 42 g 65%
Saturated Fat 0 g   0 g   0 g  
Trans Fat 0 g   0 g   0 g  
Cholesterol 37 mg 12% 74 mg 25% 111 mg 37%
Sodium 30 mg 1% 60 mg 2.5% 90 mg 4%
Potassium 150 mg 4% 300 mg 9% 450 mg 13%
Total Carbohydrates 6 g 2% 12 g 4% 18 g 6%
Fiber 4.5 g 18% 9 g 36% 13.5 g 54%
Sugar 1.5 g   2 g   4.5 g  
Protein 23 g 46% 46 g 92% 69 g 138%
Vitamins & Minerals Profile Per Scoop
Vitamin A 35% Molybdenum 35% Vitamin E 35%
Vitamin B-6 35% Pantothenic Acid 35% Iodine 35%
Biotin 35% Riboflavin 35% Vitamin K 35%
Chromium 35% Thiamin 35% Manganese 35%
Vitamin D 35% Vitamin B-12 35% Niacin 35%
Folic Acid 35% Vitamin C 35% Phosphorus 35%
Iron 35% Calcium 35% Selenium 35%
Magnesium 35% Copper 35% Zinc 35%
Amino Acids Profile Per Scoop
Alanine 1,121 mg Proline 1,323 mg Isoleucine 1,323 mg
Aspartic Acid 2,473 mg Threonine 1,668 mg Lysine 2,214 mg
Glutamine 3,939 mg Tyrosine 350 mg Phenylalanine 748 mg
Histidine 518 mg Arginine 425 mg Serine 1,093 mg
Leucine 2,530 mg Cysteine 450 mg Tryptophan 489 mg
Methionine 431 mg Glycine 403 mg Valine 1,323 mg
*Approximate Servings