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DOSERANKEVIDENCE-BASED SUPPLEMENTSFull analysis

The short answer · Sarcopenia status

Take l-leucine for sarcopenia status. This is the one to buy.

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g)
1

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g)

4.7· 396 ratings· $0.20/serving

DoseRank score83

L-Leucine 5 g — inside the studied 3-6 g window

Of 1,077 products scored for Sarcopenia status, Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g) ranks #1 with a DoseRank score of 83. L-Leucine is the strongest evidence signal for this outcome.

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Cheaper alternative$0.16 per servingPrimaforce, L-Leucine, Unflavored, 2.2 lb (1,000 g)

Retailer links may be affiliate links. Rankings and placement are never paid.

The form“Why L-Leucine — not Essential Amino Acids (EAA)?”Evidence Strong evidence

L-Leucine is the strongest evidence signal for this outcome.

  • L-LeucineThe pick

    Strong evidence · 5 g

    The most anabolic branched-chain amino acid, signaling through mTOR to trigger muscle protein synthesis. Dosed in higher ratios than isoleucine and valine in BCAA blends.

  • Essential Amino Acids (EAA)

    Strong evidence · 9250 mg

    Blend of the nine amino acids the body cannot make; drives muscle protein synthesis and matters most when dietary protein is inadequate.

Buy the #1 pick
The dose“Is the dose actually effective?”Dose fit 82

L-Leucine at 5 g lands inside the studied 3-6 g window.

L-Leucine

Studied window 3-6 g · this pick 5 g

The ranking“Why should I trust this pick?”Trust 65

Mixed trust signals — ratings are positive but the base is limited. Each product gets a DoseRank score blending clinical strength, evidence, dose fit, trust and value. Retailer links may be affiliate links — the scoring model decides placement, never payment from a brand.

  • 1,077 products scored
  • Never paid placement
  • Evidence level: Strong · 92
  • 150 brands
  • 3 ingredients
See the full analysis — every score, every productHow the ranking works
The price“Can I do better than $0.20 a serving?”Value 86

$0.20 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.

Ready?

The #1 pick is $0.20 a serving.

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g) — in stock at a tracked retailer.

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Questions

Frequently asked

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g) ranks #1 for Sarcopenia status with a DoseRank score of 83. The score blends clinical strength, evidence, dose fit, trust signals and value across 1,077 products scored for this outcome.

L-Leucine is the strongest evidence signal for this outcome.

L-Leucine at 5 g lands inside the studied 3-6 g window. DoseRank scores this product's dose fit at 82 out of 100.

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g) works out at $0.20 per serving. $0.20 per serving — low price tier for this outcome. Nothing else in this ranking costs less per serving.

No. Retailer links may be affiliate links, but rankings and placement are never paid. Every product is scored by the same public model, and the ranking is recomputed from the underlying product data rather than edited by hand.

Keep exploring

Other outcomes

  • Muscle crampsPainful involuntary muscle contractions.
  • Muscle massQuantity of skeletal muscle tissue.
  • Muscle strengthAbility of muscles to generate force.
  • Muscle weaknessReduced ability to generate force.

Use rankings as research support

DoseRank rankings are informational and not medical advice. If you are pregnant, breastfeeding, using medications, or managing a health condition, ask a qualified clinician whether a supplement fits your situation. Stop use and report concerning adverse events to a clinician, the product maker, or the retailer.

Disclosure

Retailer links may be affiliate links. Rankings and placement are not paid placement.

Nutricost, L-Leucine, Unflavored, 17.9 oz (500 g)

$0.20/serving · ★ 4.7 · In stock

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