Reviews and Information for L-Citrulline
L-Citrulline Supplements
Citrulline is promoted for exercise performance, brain function, sexual health, and more. But does citrulline really work? Is L-citrulline malate better than L-citrulline? And which citrulline supplements offer the best quality and value? ConsumerLab provides the answers based on its laboratory tests of popular citrulline supplements and in-depth review of clinical studies.
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Product Review
L-Arginine Supplements Review
Choose the Best L-Arginine Supplement. Find Out Which L-Arginine Supplement Passed CL's Tests.

Clinical Update
5/04/2024
L-Citrulline for Fatty Liver?
Does taking L-citrulline decrease liver fat or have other benefits in people with metabolic-associated fatty liver disease (MAFLD)? See what a recent study found in the What It Does section of our L-Citrulline Supplements Review, which includes our Top Picks among L-citrulline supplements.
Also see: Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Clinical Update
12/19/2024
Citrulline Malate vs. Citrulline
Is citrulline malate better than L-citrulline at improving exercise performance? See what a recent study found and learn how these forms compared in our L-Citrulline Supplements Review, which includes our Top Picks among products.
CL Answer
Which supplements can help to lower blood pressure?
Supplements to lower blood pressure, including CoQ10, vitamin C, fish oil, and olive oil, are all explored to find out what works.

Product Review
Sexual Enhancer Supplements Review (with Yohimbe, Horny Goat Weed, Arginine)
Choose the Best Sexual Enhancer Supplement. Only 30% of Selected Sexual Enhancement Supplements Pass Quality Tests.

Clinical Update
7/22/2022
Does Arginine Improve Blood Flow?
L-arginine is often promoted to improve blood flow to muscle tissue, and so is L-citrulline (which is converted to L-arginine in the body). But a recent study adds more evidence that this is often not the case. See the details in the What It Does section our L-Arginine Product Review.
Clinical Update
10/28/2022
Citrulline for Blood Pressure?
Does L-citrulline supplementation help lower blood pressure? Find out what a recent study showed in the Citrulline section of our L-arginine Supplements Review.
Also see our answer to the question: Which supplements can help to lower blood pressure?
CL Answer
Does D-aspartic acid boost testosterone levels?
Find out if D-aspartic acid (aspartic acid) raises testosterone levels, increases libido or muscle mass.

CL Answer
Can beetroot juice or supplements lower blood pressure or improve exercise performance, and are they safe?
Learn more about beetroot juice and beetroot supplements and if beetroot can really help lower blood pressure.

CL Answer
Do any supplements help with fatty liver disease? Are some diets more beneficial than others?
Find out if supplements such as vitamin E, fish oil, milk thistle, curcumin, choline, probiotics, vitamin D, reishi mushroom, or extra virgin olive oil are beneficial for fatty liver disease and learn which diet (Mediterranean, ketogenic, DASH, or fasting diets) seems to have greatest benefit.

CL Answer
What are the possible health benefits of fenugreek, and is it safe?
Fenugreek is promoted for boosting testosterone, increasing breastmilk production, lowering blood sugar, improving symptoms of polycystic ovary syndrome (PCOS), and other conditions, but does it work? Find out.

Clinical Update
9/14/2021
Citrulline for Strength?
Find out if citrulline supplementation improved muscle strength or endurance in older people in recent study. (This information is in the Citrulline section of our L-Arginine Supplements Review, as citrulline is converted to arginine in the body and it is often sold in combination with arginine).
Clinical Update
7/12/2022
Citrulline for Heart Health?
Does supplementing with citrulline reduce blood pressure and improve heart function in people with heart failure? Find out in the Citrulline section of our L-Arginine Supplements Review (citrulline is converted to L-arginine in the body).
Clinical Update
8/14/2018
Citrulline and Exercise
Several studies have evaluated citrulline (which the body converts to arginine) for enhancing athletic performance. Find out if it helps or not in the Citrulline section of the L-Arginine Review. Also, find out if L-arginine, itself, can help.
Clinical Update
12/02/2017
Citrulline for Improving Exercise?
Citrulline, a compound which is converted to arginine in the body, is often added to workout supplements to improve exercise performance. But does it really help? See what a new study found in the "What It Does" section of the L-Arginine Supplements Review >> (Also see our Top Picks among L-arginine supplements.)
Recalls & Warnings
April 18, 2013
Cardio, Energy and Sexual Enhancement Supplement Distributor Warned For Manufacturing Violations and Drug Claims
On December 21, 2012, the FDA issued a warning letter to ForMor Inc, dba ForMor International, following a facility inspection which found the company's Cardio Cocktail and Argenix dietary supplements to be adulterated because because they were prepared, packed, or held under conditions that do ...
Recalls & Warnings
April 11, 2013
Maker of Workout Booster Warned For Manufacturing Violations
On March 5, 2013, the FDA issued a warning letter to Primarch Manufacturing, Inc.
Recalls & Warnings
February 13, 2013
FDA Warns Maker of Weight Loss and Whey Protein Supplements For Manufacturing Violations and Misbranding
January 25, 2013, the FDA issued a warning letter to dietary supplement manufacturer SciLabs Nutraceuticals, following a facility inspection which found the company's dietary supplements and supplement ingredients, including N-Large 2, Flo-Gard AB, Nitrogen Glutamine capsules, Nutritech nutritional ...