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L-Citrulline Powder

Made in UK
Brand: Supplement Place
This product is Vegan FriendlyThis product is Vegetarian Friendly
Free UK Delivery Over £39
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100% Pure L-Citrulline Powder

L-Citrulline is used to increase nitric oxide levels in the blood which relaxes hardened artery walls and, in addition to lowering blood pressure, increases blood flow throughout the whole body.

L-Citrulline is a non-essential amino acid, and is broken down into L-Arginine and nitric oxide by the kidneys.

L-Arginine is sometimes used as a similar supplement, however L-Citrulline is more bioavailable, easier on the digestive system, more effective and has a longer-lasting effect.

*Note - L-Citrulline is different than Citrulline Malate, which is L-Citrulline combined with malic acid.


Take 5-12g of L-Citrulline daily (1-2 scoops) with or without food. One flat measure of the scoop included is approximately 5g. It can be mixed with water, juice, squash or anything else you prefer.

Note that it may take 2-4 weeks for the full benefits of L-Citrulline to become apparent, although nitric oxide production leading to increased blood flow should be noticeable within hours.


  • 100% L-Citrulline Powder (sourced from non-GMO corn)

Suitable for vegans and vegetarians.


  • May lower blood pressure. Care is advised when taking with blood pressure medication.

Food supplements should not be used as a substitute for a varied diet. If you are pregnant, breastfeeding, taking any medication or under medical supervision, please consult a doctor before use. Discontinue use and consult a doctor if adverse reactions occur.

Recommended for adults.


L-Arginine is sometimes taken for similar health benefits, but Arginine has had mixed results and in one study even appeared to be dangerous for some men with advanced heart disease. A further disadvantage of ingesting L-Arginine directly is that it is metabolized in the liver by arginase - in men with heart disease, arginase is “upregulated” or more active - meaning that more Arginine is converted to the amino acid ornithine, which can potentially lead to herpes outbreaks and other issues.

L-Citrulline, on the other hand, seems to produce equal or better results, plus it completely bypasses the liver and the whole arginase conversion process. It is possible to supplement L-Citrulline by eating watermelon daily but you would need to eat a LOT of watermelon, including the rind!

Our L-Citrulline powder sits high in the ranks of our best sellers. Unlike Arginine, L-Citrulline does not cause diarrhoea and produces a long-lasting effect rather than the "spike" produced by Arginine.


Nutritional Breakdown

Per 100g

Energy 401kcal / 1702 kJ
Protein 98.7g
Carbohydrates 1.0g
-of which sugars <0.1g
Fat 0.2g
-of which saturated 0.2g
-of which monounsaturated <0.1g
-of which polyunsaturated <0.1g
-of which trans <0.1g
Dietary Fibre <0.1g
Salt <0.1g
Sodium 16mg
Moisture 0.1g
Ash <0.1g


Current Batch Number: 202404227

Current Best Before Date: 01/2026


*Product reviews are the opinions of customers only. Individual results may vary.


Additional information

Weight 0.3 kg
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250g, 500g, 1kg *Best Value*

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Our long-established, family-run business sells the highest quality supplements with no nasty additives, chemicals or fillers, so you can be confident you're getting 100% natural products at affordable prices, UK wide.
logo supplement place 1592368025 44830.original

Our long-established, family-run business sells the highest quality supplements with no unnecessary fillers or additives, so you can be confident you're getting clean, natural products at fair prices. Available worldwide.

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