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What Amino Acids Are Found In Pea Protein?
Madhura Mohan
Pea protein has earned a prominent place in sports nutrition as one of the most effective plant-based proteins available. Understanding its amino acid profile helps you know exactly what you are getting, and how to use it most effectively for muscle building, recovery, and overall protein intake.
Amino Acid Profile of Pea Protein
| Amino Acid | Per 100g Pea Protein | Notes |
|---|---|---|
| Leucine | ~8g | Primary MPS trigger (mTOR activation) |
| Arginine | ~8.5g | Highest of any plant protein; supports NO production |
| Glutamic acid | ~16g | Most abundant amino acid in pea protein |
| Lysine | ~7g | Good — often limiting in cereal proteins |
| Isoleucine | ~4.5g | BCAA for energy and endurance |
| Valine | ~4.5g | BCAA for recovery |
| Methionine | ~0.9g | Low — the primary limitation of pea protein |
| Cysteine | ~1g | Low alongside methionine |
Key insight: Pea protein is richest in arginine and glutamic acid, strong in BCAAs and lysine, but low in methionine and cysteine. Combining with brown rice protein (high in methionine) creates a complete amino acid profile comparable to whey.
Pea Protein vs Other Proteins
Studies comparing pea protein to whey protein at equivalent doses show similar muscle thickness and strength gains over 12 weeks of resistance training. The slightly lower leucine content produces a marginally smaller acute MPS spike, but total muscle building outcomes over time are comparable when daily protein targets are met consistently.
Who Should Use Pea Protein?
- Vegans and vegetarians seeking a high-quality, complete(ish) plant protein
- Lactose intolerant individuals who cannot tolerate whey
- Those with soy allergies — pea protein is soy-free
- Anyone wanting allergen-free protein — no gluten, dairy, or soy
- Combination users — mixing with rice protein creates a complete profile
AS-IT-IS Pea Protein Isolate
AS-IT-IS Pea Protein Isolate is derived from yellow split peas, unflavoured and single-ingredient. 80% protein content per serving. Dope-free, GMP-certified, 3rd party lab tested. Ideal for adding to smoothies, shakes, or recipes without altering taste.
Frequently Asked Questions
“Pea protein is nearly complete, highest in arginine of any plant protein, and produces comparable muscle gains to whey when total protein targets are met. Combine with rice protein to fill the methionine gap.”
80%+ protein. Allergen-free. Mix with rice protein at 70:30 for a complete amino acid stack. AS-IT-IS Pea Protein Isolate — unflavoured, single-ingredient, 3rd party tested.