🟢 100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 6% of ingredients have research evidence
B Label Compliance Grade

Product Label

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Label Data

45 Gram(s) Serving Size
8 Servings
Amino acid/Protein Product Type
6% Evidence Coverage

Supplement Facts — Evidence Check

Total Calories
436 Calorie(s)
Calories from Fat
252 Calorie(s)
Total Fat
28 Gram(s) (43% DV)
Saturated Fat
Trans Fat
Cholesterol
56 mg (19% DV)
Sodium
48 mg (2% DV)
Potassium
300 mg (9% DV)
Total Carbohydrates
12 Gram(s) (4% DV)
6 Gram(s) (24% DV)
📊 Market median: 100.0mg (1 products) 📚 42 studies (Tier A: 1, B: 15)
This product: 6mg
Sugar
2 Gram(s)
Protein
40 Gram(s) (80% DV)
Vitamins & Minerals Profile Per Scoop
Ingredients
A Proprietary Blend of Ultra 10x-microfiltered enzymatically hi-abosorption Whey Protein isolate and Whey Protein concentrate

Label Claims — Verification

Nutrient
All Other
Structure/Function
All Other (98% of products) Structure/Function (78% of products) Nutrient (56% of products)

Target Groups

Adult (18 - 50 Years) Gluten Free

Product Information

📋 Directions for Use

Directions and Use: Maintenance As part of muscle maintenance solution, add 1-2 scoops of MuscLean to 6-12oz of cold water and shake or mix. For maximum results consume MuscLean once daily as a part of your healthy diet and training regimen. Weightlifting As part of weightlifting or strength and conditioning routine, add 2-3 scoops of MuscLean to 12-18oz 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 18oz. of cold water and shake or mix. For maximum results consume MuscLean 2-3 times daily in between 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.

⚠️ Warnings & Precautions

Caution: 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.

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 avoids excessive heat.

Allergen warning: Manufactured in a plant that also processes egg, soy, peanut, tree nut, fish, crustaceans/shellfish, and wheat products. Persons with mild to severe milk allergies should get approval from your doctor prior to consuming this product. Product contains whey and milk proteins.

🧪 Formulation Notes

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.

~ 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.

Gluten free

Product contains whey and milk proteins.

~ Low carbohydrates, low sugar, low glycemic index

~ Zero lactose, zero aspartame, zero trans fat, gluten free

High Protein Low Carb

Additional Information

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

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.

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 (cotisol).

~ Additionally, MuscLean's protein molecules are coated with 8 specifically chosen digestive enzymes which dramatically increase digestion and enhance absorption, thereby elimination 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.

Keep out of reach of children, store in a cool, dry place and avoids excessive heat.

140052A

Made in USA

Gluten free

Lean muscle weight gainer

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

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 carbohydrates/ 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 all consumers who are looking to preserve or maximize their lean muscle mass.

Choose your goal Servings per container: 25 13 8

All rights reserved. Made in the USA.

Product Details

UPC / SKU 7 64779 25712 5
DSLD Entry Date 2016-11-21
Product Type Amino acid/Protein
Form Powder
DSLD ID 66632
Data Updated 2026-04-11

Research Evidence

50 Research Sources
47 Avg Quality Score
28 Rct
13 Clinical Trial
5 Guideline
4 Systematic Review
A Using a Novel Consensus-Based Chemoinformatics Approach to Predict ADMET Properties and Druglikeness of Tyrosine Kinase Inhibitors.
Guideline International journal of molecular sciences 2025
B Australia and New Zealand consensus statement on the cardiovascular management of patients with chronic lymphocytic leukaemia treated with Bruton's tyrosine kinase inhibitors.
Guideline Internal medicine journal 2025
B Branched-chain amino acid supplementation for improving growth and development in term and preterm neonates
Systematic Review The Cochrane database of systematic reviews 2020
B [Clinical practice guideline on anaplastic lymphoma kinase-tyrosine kinase inhibitors for non-small cell lung cancer (2025 edition)].
Guideline Zhonghua zhong liu za zhi [Chinese journal of oncology] 2025
B [Chinese expert consensus on epidermal growth factor receptor tyrosine kinase inhibitors for the treatment of non-small cell lung cancer (2025 edition)].
Guideline Zhonghua yi xue za zhi 2025
B Consensus Guideline for the Diagnosis and Treatment of Tyrosine Hydroxylase (TH) Deficiency.
Guideline Journal of inherited metabolic disease 2025
B Baseline-dependent effect of dopamine's precursor L-tyrosine on working memory gating but not updating
Rct Cognitive, affective & behavioral neuroscience 2020
B Effect of Amino Acid Supplementation on Iron Regulation after Endurance Exercise
Rct Nutrients 2023
C Attenuating Muscle Damage Biomarkers and Muscle Soreness After an Exercise-Induced Muscle Damage with Branched-Chain Amino Acid (BCAA) Supplementation: A Systematic Review and Meta-analysis with Meta-regression
Systematic Review Sports medicine - open 2024
C The Effects of Green Tea Amino Acid L-Theanine Consumption on the Ability to Manage Stress and Anxiety Levels: a Systematic Review
Systematic Review Plant foods for human nutrition (Dordrecht, Netherlands) 2020
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