Buy L-Citrulline Powder: the performance amino acid
L-Citrulline is a non-essential amino acid central to nitric oxide (NO) production and the urea cycle. As a direct precursor to L-arginine, it supports vasodilation, healthy blood flow and sports performance. This 500 g powder from Nutrimuscle gives about 166 doses of 3g, several months of daily use. Available at our Paris shop, with Click & Collect and delivery across France and Europe.
Why citrulline works better than arginine
L-Citrulline takes its name from watermelon (Citrullus lanatus), where it was first discovered. Unlike orally ingested L-arginine, which is largely broken down in the gut and liver, L-citrulline escapes this first-pass metabolism and is converted to L-arginine in the kidneys, producing significantly higher and longer-lasting plasma arginine levels.
BioKyowa fermentation quality
This L-citrulline is produced using BioKyowa natural fermentation technology, meeting demanding standards for purity and quality — 100% pure with no excipients, flavourings, colourings, preservatives or sweeteners.
How to use & precautions
Take 3g a day (one level scoop), dissolved in water, fruit juice or your training drink. On training days, take 30 minutes before your session for the vasodilating, performance-supporting effect; on rest days, take in the morning on an empty stomach to support recovery and the urea cycle.
Not a substitute for a varied, balanced diet. Not recommended for pregnant or breastfeeding women. If on medication (particularly antihypertensives or PDE5 inhibitors), consult your doctor before use. Do not exceed the recommended daily dose. Store in a cool, dry place away from light and moisture.
Frequently asked questions
What is the difference between L-citrulline and L-arginine?
Oral L-arginine undergoes substantial first-pass liver breakdown, limiting its effectiveness as a supplement. L-citrulline escapes this breakdown and raises plasma arginine levels more significantly and for longer, making it the superior choice for supporting nitric oxide production.
Is BioKyowa L-Citrulline suitable for vegans?
Yes — it is 100% vegan, produced by natural fermentation from plant substrates with no animal ingredients, and is gluten-free, non-GMO and free of major allergens.
Why buy from Herba Barona?
Herba Barona is an independent specialist supplement shop in the heart of Paris — established in 2006. What you order is genuinely on our shelves: we ship from our own stock, with no dropshipping and no long waits.
Visit us at 10 rue Théophile Roussel, Paris 12 — or use Click & Collect and pick up your order in-store. We also deliver across France and Europe. Friendly, expert advice in English from our team.
Delivery & collection
Where is the shop?
Herba Barona is at 10 rue Théophile Roussel, 75012 Paris — a two-minute walk from Ledru-Rollin (line 8), close to Bastille. Open Tuesday to Saturday, 9:30 am–6:30 pm.
Can I order online or collect in store?
Yes. We ship across France and Europe under the same conditions as our French store, or choose Click & Collect to pick up your order for free at our Paris shop.
Guide: BCAA, Creatine, Citrulline: The Athlete’s Essentials
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Food supplement. Does not replace a varied, balanced diet or a healthy lifestyle. Do not exceed the recommended daily dose. Keep out of reach of children.
