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)
4.7· 396 ratings· $0.20/serving
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.
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.
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
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.
View on iHerbA saved, shareable breakdown: your matched products, dose math, and interaction flags to discuss with a clinician.
Or take the 60-sec quiz →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.
Keep exploring