The short answer · Peripheral circulation
Take propionyl-l-carnitine for peripheral circulation. This is the one to buy.

Life Enhancement, PropeL™, 240 Vegetarian Capsules
4.5· 119 ratings· $2.18/serving
Propionyl-L-Carnitine 2 g — inside the studied 1-3 g window
Of 340 products scored for Peripheral circulation, Life Enhancement, PropeL™, 240 Vegetarian Capsules ranks #1 with a DoseRank score of 79. Propionyl-L-Carnitine is the strongest evidence signal for this outcome.
Retailer links may be affiliate links. Rankings and placement are never paid.
The form“Why Propionyl-L-Carnitine — not Cayenne?”Evidence Strong evidence
Propionyl-L-Carnitine is the strongest evidence signal for this outcome.
- Propionyl-L-CarnitineThe pick
Strong evidence · 2 g
Propionyl ester of L-carnitine with preferential uptake in vascular and cardiac tissue; the form most studied for peripheral artery disease and male sexual function.
- Cayenne
Limited evidence · 500 mg
Dried fruit of Capsicum annuum rich in capsaicin; used to support thermogenesis, circulation, and digestion, with topical analgesic effects when applied to skin.
The dose“Is the dose actually effective?”Dose fit 78
Propionyl-L-Carnitine at 2 g lands inside the studied 1-3 g window.
Propionyl-L-Carnitine
Studied window 1-3 g · this pick 2 g
The ranking“Why should I trust this pick?”Trust 50
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.
- 340 products scored
- Never paid placement
- Evidence level: Strong · 92
- 91 brands
- 3 ingredients
The price“Can I do better than $2.18 a serving?”Value 50
$2.18 per serving — high price tier for this outcome. The cheapest ranked pick here is $0.06 per serving.
- 2NOW Foods, Cayenne, 500 mg, 250 Veg CapsulesScore 4 · $0.06/servingiHerb
- 4Nutricost, Cayenne Pepper, 530 mg, 240 CapsulesScore 4 · $0.06/servingiHerb
Why not the absolute cheapest? The DoseRank score also weighs clinical strength, evidence, dose fit and trust — the very cheapest listings rarely hold up everywhere else.
Ready?
The #1 pick is $2.18 a serving.Life Enhancement, PropeL™, 240 Vegetarian Capsules — 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
Life Enhancement, PropeL™, 240 Vegetarian Capsules ranks #1 for Peripheral circulation with a DoseRank score of 79. The score blends clinical strength, evidence, dose fit, trust signals and value across 340 products scored for this outcome.
Keep exploring