Which are the best citrulline supplements?
L-citrulline is a nonessential amino acid produced naturally in the body and found in foods like watermelon.
L-citrulline’s purpose is to detoxify ammonia, dilate blood vessels, and improve nitric oxide metabolism.
Being a vasodilator, L-citrulline is believed to help with various diseases and ailments, including erectile dysfunction, high blood pressure, and heart disease.
It’s also beneficial for enhancing physical and athletic performance.
In this article, you’ll learn everything you need to know about citrulline and view a roundup of the best citrulline supplements on the market right now.
Here’s a list of the 10 best citrulline supplements:
Top 10 Citrulline Supplements Compared
Our supplement lists are created by researching the best-reviewed products from the most reputable companies and web sources.
In A Rush? Here’s Our Top Pick:
10. Horbäach – L-Citrulline
Horbäach L-Citrulline capsules are formulated to support protein metabolism and exercise performance.
Each bottle contains 180 capsules, or 60 servings, providing you with 2.4g of L-Citrulline per serving.
Other ingredients include gelatin, vegetable magnesium stearate, rice powder, and silica.
The supplement is Non-GMO and is free from gluten, wheat, yeast, milk, lactose, soy, artificial colors, flavors, sweeteners, and preservatives.
It’s packaged and lab-tested in the USA for purity and potency.
Horbäach recommends taking three capsules daily, preferably on an empty stomach, for best results.
9. Zazzee – L-Citrulline Malate
Zazzee L-Citrulline capsules are designed to support healthy muscle mass and recovery.
Each bottle contains 180 capsules/servings, all providing you with 750mg of L-Citrulline Malate.
Other ingredients include cellulose, rice powder, magnesium stearate, and silica.
It’s free from wheat, gluten, soy, milk, egg, fish, shellfish, tree nuts and is produced in a GMP facility.
The brand suggests that supplementing with L-Citrulline may help support building muscle mass, along with endurance, workout recovery, energy levels, stamina, blood pressure regulation, and a healthy immune system.
Zazzee recommends taking one capsule one to two times daily between meals for best results.
8. Amazing Formulas – L-Citrulline
Amazing Formulas L-Citrulline tablets are designed to support cardiovascular and circulatory health.
Each bottle contains 120 tablets, or 60 servings, all providing you with 2g of L-Citrulline.
Other ingredients include maltodextrin, microcrystalline cellulose, stearic acid, silicified microcrystalline cellulose, and magnesium stearate.
The brand suggests that L-Citrulline may also help reduce fatigue and promote endurance and sexual health.
The supplement is Non-GMO, made in the USA, third-party tested, and manufactured following GMP guidelines.
Amazing Formulas recommends adults take two tablets twice daily for best results.
7. Double Wood Supplements – L-Citrulline
The L-Citrulline capsules by Double Wood Supplements are designed to help support workout endurance, muscle recovery, and cardiovascular health.
Each bottle contains 210 capsules, or 105 servings, providing your 1.2g of L-Citrulline per serving.
The brand suggests that L-Citrulline may help boost L-Arginine and Nitric Oxide levels, which may help improve muscle pump during a workout.
The supplement is made in the USA and is safety tested for heavy metals and microbes in a state-of-the-art facility in New York.
Double Woods Supplements recommends taking two capsules a day with food for best results.
6. PrimaForce – Citrulline Malate
PrimaForce Citrulline Malate powder is formulated to enhance strength performance and improve muscle recovery.
Each container holds 250 servings/scoops, all providing you with 2g of L-Citrulline DL-Malate.
The brand suggests that their Citrulline Malate powder helps improve workout stamina, energy, and endurance while minimizing muscle fatigue for optimal workout performance.
The supplement is lab-tested for potency and purity and is produced in a GMP-compliant facility in the USA.
PrimaForce suggests taking three to four scoops before exercise or weight training for best results.
5. Nutricost – L-Citrulline
Nutricost L-Citrulline capsules are formulated to help muscle recovery and endurance.
Each bottle contains 180 capsules, or 90 servings, providing you with 1.5g of L-Citrulline per serving.
Other ingredients include gelatin, vegetable magnesium stearate, and stearic acid.
The supplement is Non-GMO, gluten-free, and manufactured in a GMP-compliant, FDA-registered facility.
Nutricost recommends taking two capsules with 8-12oz of water as a dietary supplement or two to four capsules 15-30 minutes before a workout as a pre-workout amplifier.
4. Doctor’s Best – L-Citrulline
Doctor’s Best L-Citrulline powder is designed to help improve circulation and muscle maintenance.
Each tub contains 66 servings/scoops, all providing you with 3g of L-Citrulline.
The brand suggests that L-Citrulline may help support nitric oxide metabolism, protein synthesis, vascular dilation, blood circulation, and muscle recovery.
The supplement is Non-GMO, free from gluten and soy, and certified vegan.
Doctor’s Best recommends taking one scoop of L-Citrulline powder with 8oz of water, or your favorite beverage, before workouts for best results.
3. Kaged Muscle – Citrulline
Kaged Muscle Citrulline powder is formulated to support endurance, muscle pumps, and vascularity.
Each tub contains 100 servings, all providing you with 2g of L-Citrulline.
The supplement is naturally flavored, third-party tested and manufactured following GMP guidelines.
It’s free from artificial dyes, fillers, colors, and flavors and tested for banned substances.
Kaged Muscle recommends mixing one scoop with your favorite beverage for best results.
2. NOW Foods – L-Citrulline
NOW Foods L-Citrulline tablets are designed to promote strength and stamina during a workout.
Each bottle contains 120 tablets/servings, all providing you with 1.2g of L-Citrulline.
Other ingredients include stearic acid, croscarmellose sodium, microcrystalline cellulose, and silicon dioxide.
The supplement is free from nano-particle nutrients, hidden steroids, unlabeled allergens, artificial colors, and flavors.
It’s manufactured in the USA in a GMP-compliant facility and is screened for potency, identity, and safety.
NOW Foods recommends taking one tablet once or twice daily between meals for best results.
1. BulkSupplements – L-Citrulline
BulkSupplements L-Citrulline powder is formulated to boost athletic endurance and recovery.
Each pouch contains 166 servings, all providing you with 3g of L-Citrulline.
It’s free from sugar, soy, dairy, yeast, gluten, and additives.
The brand suggests that L-Citrulline may boost athletic endurance, fortify immune function, and support overall cardiovascular health.
They also state that it can help boost blood flow and increase vasodilation, which may help to reduce blood pressure.
BulkSupplements recommends taking 3000mg two times daily for best results.
Frequently Asked Questions About Citrulline Supplements
Q: What Is L-Citrulline?
L-citrulline is a nonessential amino acid produced naturally in the body.
It’s also found in foods like watermelon and is converted into L-arginine in the kidneys.
Its name is derived from Citrullus, the Latin word for watermelon.
There are two forms of citrulline that are available in supplement form: L-citrulline and citrulline malate.
The main difference between the two is L-citrulline is citrulline in its purest form, while citrulline malate is made up of L-citrulline and DL-malate, which is a compound that helps convert food to energy.
L-citrulline is often referred to under several names, such as L-citrulina, L-citrulline malate, malate de citrulline, and 2-amino-5 (carbamoylamino) pentanoic acid.
Q: What Are The Benefits of L-Citrulline?
L-citrulline is used to treat many diseases and ailments.
Most often, it’s used to reduce blood pressure, improve blood flow, and enhance physical and athletic performance.
Other potential benefits L-citrulline is used for include increasing the production of growth hormone (GH), erectile dysfunction, sickle cell disease, fatigue, muscle weakness, Alzheimer’s disease, and diabetes.
Research also suggests that L-citrulline may help treat intestinal difficulties, like Celiac disease and Short bowel syndrome.
L-Citrulline is also thought to produce an antioxidant effect that helps with detoxification.
Q: Does L-Citrulline Have Any Side Effects?
L-citrulline is considered safe to consume orally for most adults when taken according to the recommended serving guidelines.
However, although side effects are rare, L-citrulline may cause mild symptoms like heartburn, swelling, stomach upset, nausea, and diarrhea.
You should also be aware that L-citrulline can react with certain medications, which increases the chances of side effects.
As with any supplement you’re looking to add to your diet, check with your doctor or medical professional first to be on the safe side.
Q: How Do I Take L-Citrulline?
L-Citrulline supplements typically come in capsules, tablets, or powder.
Depending on your preference, you should choose one that best suits your lifestyle and dietary requirements.
There is no specific range of doses for L-citrulline at the time of writing, but most manufacturers recommend a daily serving of between 500mg to 3g, depending on your age, health, and tolerance.
The supplement does not need to be taken with food, so you’re free to take it as and when it suits your routine.
Generally, it’s best practice to follow the manufacturer’s recommend serving guidelines, as this will ensure you’re getting the minimum amount you need, and then you can adjust the serving size once you’ve assessed your tolerance.
Q: Which L-Citrulline Supplement Should I Choose?
With lots of high-quality citrulline supplements on the market, you should look for one that contains a good level of citrulline per serving and that’s been produced in an FDA-registered facility following Good Manufacturing Practices (GMP).
Next, you should check that it’s free from artificial ingredients, like binders, fillers, sweeteners, and flavors, as L-citrulline does not need them to do its job.
Look for well-regarded brands in the supplement industry that have as many certifications as possible, as this is normally a good indication that it’s a quality supplement.
Lastly, consider the price per serving in relation to the quantity of L-citrulline, as well as the value you’re getting overall.
We hope you enjoyed our list of the 10 best citrulline supplements.
If you’d like to learn more about other beneficial supplements, check out our latest guides.
Here’s a quick recap of the 10 best citrulline supplements:
- BulkSupplments – L-Citrulline
- NOW Foods – L-Citrulline
- Kaged Muscle – Citrulline
- Doctor’s Best – L-Citrulline
- Nutricost – L-Citrulline
- PrimaForce – Citrulline Malate
- Double Wood Supplements – L-Citrulline
- Amazing Formulas – L-Citrulline
- Zazzee – L-Citrulline Malate
- Horbäach – L-Citrulline