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Workout support, Muscle protein building, Lean mass support, Exercise recovery, Metabolic support
Active adults who train regularly and want convenient essential amino acids, and individuals with lower protein intake seeking additional building blocks for muscle and connective tissue.
Mix 1 scoop in at least 8 ounces of water one to two times daily; take around workouts or between meals as preferred. Amino acid powders are often well tolerated when sipped during training or taken with a small amount of food if stomach sensitive.
Gluten Free
Leucine activates the mTOR pathway in muscle cells, which may support muscle protein synthesis and recovery.
Caution: May be more effective when taken with other essential amino acids; excessive single-amino intake can imbalance overall amino patterns.
Isoleucine is used by muscle as a fuel source during exercise and may support muscle protein synthesis and glucose uptake.
Caution: High doses of isolated BCAAs can compete with other amino acids for transport; balance with a complete EAA profile as provided.
Valine contributes to muscle protein building and may help buffer exercise-related muscle breakdown.
Caution: Taking on an empty stomach can cause mild nausea for some; consider mixing with water and consuming with a small snack if sensitive.
Lysine is an essential amino acid that supports collagen formation and is required for building complete proteins in the body.
Caution: Those following a high-arginine regimen may wish to space dosing, as lysine and arginine share transport pathways.
Threonine supports protein synthesis and is a key component of collagen and elastin that contribute to connective tissue structure.
Caution: Amino acid supplements can affect nitrogen balance; use within the suggested serving if total protein intake is already high.
This blend provides all essential amino acids with higher amounts of the branched-chain amino acids leucine, isoleucine, and valine to support muscle protein building. The remaining EAAs like lysine and threonine supply the necessary building blocks to complete protein synthesis and support connective tissue structures.
Label Warning: Do not use if pregnant or nursing. California Proposition 65 warning: this product exposes you to chemicals, including lead, associated with birth defects or other reproductive harm.
Who should be cautious: People sensitive to stevia or turmeric should use caution. Those using serotonergic medications may wish to be cautious due to the presence of L-tryptophan and discuss with a healthcare provider before use.
Storage: Store tightly sealed in a cool, dry place.
Many users report feeling quicker muscle recovery and better stamina during workouts.
Several customers enjoy the lemon flavor and mix it easily into daily shakes or bowls.
A portion of users find the lemon taste overpowering, and a few mention mild digestive discomfort.
This product is guaranteed authentic and backed by our easy returns & refunds policy. Details
Omega-3s may support joint health and reduce inflammation, enhancing the benefits of amino acids for active individuals.
AI generated. Not medical advice.
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Clinically-validated EAA and BCAA formula that support your muscles and your love for training and weightlifting.
Optimize your workout results and build the lean muscle mass that boosts strength. The Amino Complex formula also enhances cellular energy production.
Amino acids are the building blocks of protein. They fuel muscle gain and other physiological functions, including enzyme production, hormone regulation, cognitive ability, neurotransmitter balance, metabolism, and energy production. As we age, we lose muscle mass, which can cause other health issues, so it is important to promote the growth of lean muscle mass.
Of the 20 amino acids in total, nine are classified as essential amino acids (EAAs), those the body cannot produce itself. Therefore, they must be consumed through diet and supplementation to support the body’s internal production of energy.
Thorne’s Amino Complex is a comprehensive blend of essential amino acids, which is high in branched-chain amino acids (BCAAs) – a group of amino acids validated through clinical trials to promote the growth of lean muscle mass and enhance muscle strength.
Mix 1 scoop with at least 8 ounces of water one to two times daily or as recommended by your health-care practitioner.
Flavor, citric acid, stevia extract (leaf), turmeric powder.
Tamper Evident: Use only if bottle is sealed. Store tightly sealed in a cool, dry place.
If pregnant or nursing, do not use this product.
Consuming this product can expose you to chemicals, including lead, which are known to the State of California to cause birth defects or other reproductive harm. Prop 65.
While iHerb strives to ensure the accuracy of its product images and information, some manufacturing changes to packaging and/or ingredients may be pending update on our site. Although items may occasionally ship with alternate packaging, freshness is always guaranteed. We recommend that you read labels, warnings and directions of all products before use and not rely solely on the information provided by iHerb.
| Supplement facts | ||
| Serving Size: One Scoop (7.7 g) | ||
| Servings Per Container: 30 | ||
| One Scoop (7.7 g) Contains: | %DV | |
| Calories | 25 | |
| Total Carbohydrate | 1 g | <1%* |
| L-Leucine | 1.25 g | ** |
| L-Lysine (as L-Lysine Chloride) | 650 mg | ** |
| L-Isoleucine | 625 mg | ** |
| L-Valine | 625 mg | ** |
| L-Threonine | 350 mg | ** |
| L-Histidine (as L-Histidine Chloride Monohydrate) | 150 mg | ** |
| L-Cystine | 150 mg | ** |
| L-Phenylalanine | 100 mg | ** |
| L-Methionine | 50 mg | ** |
| L-Tyrosine | 30 mg | ** |
| L-Tryptophan | 20 mg | ** |
| *Percent Daily Values are based on a 2,000 calorie diet. **Daily Value (DV) not established. | ||
