Everything DoseRank tracks on the l-arginine l-citrulline complex shelf — Calcium Folinate and L-Ornithine. The category itself is never ranked: 28 products get scored the moment you say what you want them to do.
How to read the scores
This legend covers the scores on this page — for data sources, scoring weights, and limits, read the full methodology →
Answer a few questions about your goals, habits, stack, and budget. Then, DoseRank will find the products that best match your needs based on your answers. It's free and only takes 60 seconds! No account is required.
A saved, shareable breakdown: your matched products, dose math, interaction flags to discuss with a clinician, and a price-tracked stack you can revisit.
Questions
Each product gets a composite score blending clinical strength, evidence, dose fit, trust and value — computed for the goal you picked, across this category's products. The #1 on the DoseRank tab has the highest composite; the other tabs re-rank the same products by Value, Trust, or Popularity. Placement is never paid.
Start with a goal, not a brand
Browsing l-arginine l-citrulline complex supplements without a goal makes no sense — different products do different jobs, and “best” flips depending on which job you're hiring for. These are the 37 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Gastrointestinal adverse eventUndesired digestive side effect such as nausea, diarrhea, or pain.10 rankedStrong
Drug-supplement interactionClinically relevant interaction between a supplement and a medication.3 rankedStrong
Erectile functionAbility to achieve and maintain an erection.17 rankedModerate-strong
Delayed-onset muscle sorenessPost-exercise muscle pain and stiffness.21 rankedModerate-strong
Blood pressureArterial pressure; direction of benefit depends on baseline status.19 rankedModerate-strong
Niacin statusBiochemical sufficiency of vitamin B3.3 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.18 rankedModerate-strong
ThermogenesisHeat production and metabolic energy expenditure.7 rankedStrong
Resting energy expenditureCalories burned at rest; marker of basal metabolism.7 rankedStrong
Exercise toleranceAbility to continue activity without unacceptable symptoms.1 rankedStrong
Vitamin B6 statusBiochemical sufficiency of pyridoxine-related compounds.3 rankedStrong
Congenital anomalyStructural or functional birth defect.3 rankedStrong
Fat oxidationUse of fat as an energy source.4 rankedModerate-strong
Folate statusBiochemical sufficiency of folate.3 rankedStrong
Cognitive functionOverall thinking ability including memory, attention, and processing.9 rankedLimitedNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best l-arginine l-citrulline complex supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 28 products against that goal's trials.