Everything DoseRank tracks on the l-citrulline shelf — L-Citrulline. The category itself is never ranked: 72 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-citrulline 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 45 health outcomes that matter for this category. Pick yours, and the full evidence-ranked shelf loads for that goal alone.
Erectile functionAbility to achieve and maintain an erection.48 rankedModerate-strong
Nitric oxide bioavailabilityAvailability of nitric oxide relevant to vascular function.57 rankedStrong
Endurance performanceAbility to maintain effort over a prolonged duration.58 rankedStrong
Gastrointestinal adverse eventUndesired digestive side effect such as nausea, diarrhea, or pain.28 rankedStrong
Power outputAbility to generate force rapidly.21 rankedStrong
Drug-supplement interactionClinically relevant interaction between a supplement and a medication.4 rankedStrong
Delayed-onset muscle sorenessPost-exercise muscle pain and stiffness.60 rankedModerate-strong
Perceived exertionSubjective difficulty of physical effort.3 rankedStrong
Reaction timeSpeed of physical or cognitive response to a stimulus.4 rankedStrong
Endothelial functionAbility of blood vessels to dilate and respond normally.44 rankedModerate-strong
Strength performanceMaximum or functional force production.3 rankedStrong
FatiguePersistent tiredness, low stamina, or lack of energy.67 rankedStrong
Blood pressureArterial pressure; direction of benefit depends on baseline status.59 rankedStrong
AlertnessWakefulness and readiness to respond.4 rankedStrong
Liver functionOverall biochemical or clinical hepatic performance.7 rankedModerate-strongNothing is ranked yet — the shelf stays locked until you pick a goal.
No goal, no ranking.
A “best l-citrulline supplement” list without a goal would be marketing, not evidence. Pick what you want to improve and DoseRank scores all 72 products against that goal's trials.