EAA Protein Support | All 9 Essential Amino Acids + Creatine + AAKG | Lemon Flavor

 You've been taking BCAAs. They're doing a third of the job.

Branched-chain amino acids namely leucine, isoleucine and valine are the three essentials that directly stimulate muscle protein synthesis. They're well-studied, well-marketed, and in nearly every sports supplement on the market. The problem is that stimulating protein synthesis and completing it are two different things.

Your body needs all nine essential amino acids to build a protein chain. Leucine pulls the trigger, but if lysine, threonine, methionine, phenylalanine, tryptophan, and histidine aren't available, the synthesis process stalls. You've activated the machinery and given it no material to work with.

This is the gap that EAAs address and that BCAAs alone don't.

A note on MPS and how EAA protein equivalence works

Muscle protein synthesis runs in two phases. Initiation: leucine activates mTOR and signals the ribosome to start building. Elongation: the ribosome assembles the full protein chain, which requires all nine essential amino acids present in circulation simultaneously. If any one is missing, elongation stalls regardless of how much leucine triggered it.

This is why measuring an EAA formula in grams of protein alone misses the point. A complete EAA profile drives an MPS response disproportionate to its gram weight because there's no non-essential amino acid dilution. Whey protein at 25g is roughly 40–45% EAAs by composition. A complete EAA formula at the same essential amino acid content can drive a comparable MPS stimulus at a fraction of the serving size. The relevant question isn't how many grams. It's whether the profile can complete what leucine starts.

iThrive EAA Protein Support provides the complete nine-essential amino acid spectrum at clinically relevant doses, alongside Creapure® pharmaceutical-grade creatine, 1600mg of glycine, and AAKG for nitric oxide support. It is not a protein powder. It is not a BCAA product. It is a precision amino acid formula built for people who want to understand what they're putting in their body and why.

EAAs vs BCAAs vs Whey - what you're actually getting:

FSSAI compliance note: comparison claims are factual formulation statements. 

Four ingredients worth understanding specifically

The formula has 12 ingredients. Four of them are in here for reasons that go beyond standard EAA coverage.

L-Leucine - 2200mg · The mTOR trigger

Leucine is the primary activator of mTOR, the molecular switch that initiates muscle protein synthesis. At 2200mg, it is dosed above the threshold consistently shown in research to activate this pathway meaningfully. Every EAA formula includes leucine. Not every formula includes it at a dose that does the job.

Creapure® Creatine Monohydrate - 2500mg · Pharmaceutical-grade ATP support

At 2500mg per sachet, it supports ATP regeneration during high-intensity output, contributes to strength and power output, and enhances recovery between efforts. Including it in an EAA formula reflects how practitioners actually use these nutrients together — not as separate supplements but as a stack.

L-Glycine - 1600mg · Three functions, one ingredient

Glycine is the most abundant amino acid in the human body and the most consistently under-included in supplement formulas. At 1600mg, it serves three distinct roles in this formula.

Creatine synthesis - Glycine is a direct substrate for creatine production alongside arginine and methionine, it amplifies the effect of the Creapure® in the formula.

Collagen support - Glycine makes up approximately one-third of the amino acid composition of collagen, the structural protein of connective tissue, skin, and bone.

Sleep quality - Glycine acts as an inhibitory neurotransmitter in the central nervous system. Clinical studies show 3g of glycine before sleep improves sleep onset, subjective sleep quality, and next-day cognitive performance.

L-Arginine Alpha-Ketoglutarate (AAKG) - 1500mg · Nitric oxide precursor

AAKG is a more bioavailable form of arginine, the amino acid your body uses to produce nitric oxide via the L-arginine/NOS pathway. Nitric oxide dilates blood vessels, improving blood flow and oxygen delivery to muscle tissue during exercise, and enhancing the delivery of amino acids and creatine to working muscles.

The remaining 8 amino acids,

Other ingredients: Natural lemon flavour, Citric Acid, Malic Acid, Stevia, Monk Fruit Powder.

What iThrive EAA Protein Support may support:

Athletes and active adults for performance and recovery

• Leucine at 2200mg meets the threshold for meaningful mTOR activation and muscle protein synthesis

• Creapure® supports ATP regeneration during high-intensity efforts, strength, power, sprint capacity

• AAKG supports nitric oxide production for improved blood flow and oxygen delivery to working muscle

• Histidine (carnosine precursor) buffers lactic acid accumulation during high-intensity output

Vegetarians, vegans, and protein-deficient diets

• Plant-based diets are consistently low in leucine, lysine, and methionine, the three essentials most limiting in plant proteins

• EAAs deliver the complete essential spectrum without dairy, soy, or animal-derived protein

Aging adults for muscle preservation and connective tissue

• Sarcopenia or age-related muscle loss accelerates from the mid-40s and is directly linked to inadequate leucine and essential amino acid intake

• Glycine at 1600mg supports collagen synthesis, joint health, skin integrity, connective tissue repair

• Creapure® creatine is consistently shown to support muscle strength and function in aging adults independent of exercise

Post-illness and recovery contexts

• Essential amino acids are the most efficient substrate for tissue repair, no digestive conversion required

• Tryptophan supports serotonin and melatonin synthesis for mood balance and sleep quality during recovery

• Glycine supports the body's natural detoxification pathways relevant during and after medication-heavy illness periods

12 ingredients. Every one of them functional.

No magnesium stearate. No silicon dioxide. No artificial colours. No sucralose. No acesulfame-K. No soy. No dairy. No gluten.

Sweetened with Stevia and Monk Fruit only, both at doses that provide sweetness without aftertaste or gut disruption. The lemon flavor is natural. Citric and Malic Acid are included for pH balance and flavor profile, not as fillers.

Creatine is Creapure®, manufactured in Germany, tested for purity. All amino acids are fermentation-derived. GMP certified. Third-party lab tested

How to use

Mix 1 sachet (14g) in 250–300ml of cold water and consume immediately. Best taken 20–30 minutes before training, or immediately after or as directed by your healthcare practitioner.

If taking for recovery or sleep support: take in the evening, 30–60 minutes before bed. The glycine and tryptophan in this formula have documented sleep-quality benefits at these doses so timing matters.

If taking for general protein support (non-training days): any time of day on an empty stomach or between meals. EAAs absorb rapidly without food, no digestive load required.

Can be taken alongside: iThrive Magnesium Bisglycinate (magnesium supports muscle function and ATP production as it has strong synergy with creatine), iThrive Active B-Complex (B6 is a cofactor in amino acid metabolism), and iThrive Zinc Defense (zinc supports testosterone synthesis and muscle protein metabolism).

Note on creatine loading: at 2500mg per sachet, Creapure® is dosed for daily maintenance rather than a loading protocol. For clients using higher creatine doses under practitioner guidance, this formula contributes to total daily creatine intake.

Practitioner’s Note

"In our practitioner curriculum, the amino acid conversation almost always starts in the wrong place. Students come in knowing BCAAs - leucine, isoleucine, valine. What takes time to internalize is that BCAAs are a signal, not a substrate. Leucine activates mTOR. But mTOR activation without the remaining six essential amino acids available in circulation is like pressing the start button on a machine with no raw material loaded. The synthesis process initiates and then stalls. This is why the clients who come to us after years of BCAA supplementation often show no meaningful change in lean mass or recovery markers as the signal is there, the supply isn't. The EAA formula addresses this directly. But what I find most clinically interesting about this specific formulation is the glycine dose. At 1600mg, glycine is contributing to three separate functions simultaneously: creatine synthesis, collagen turnover, and sleep quality. Most practitioners I train don't think of glycine as a performance ingredient. In practice, it's one of the most versatile amino acids in the formula." Shagun Arya Head of Academy, iThrive