Energy Best Citrulline Supplements – Top 10 Brands for 2022

Best Citrulline Supplements – Top 10 Brands for 2022

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In order to help you find a good product, we’ve researched & compared the best citrulline supplements on the market right now.

Top 10 Citrulline Products Compared

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1. Transparent Labs RawSeries Citrulline


Transparent Labs RawSeries Citrulline uses pure pharmaceutical grade L-citrulline malate, and nothing else. You won’t find fillers, additives, artificial flavorings or anything like that in this product, nor in any product that Transparent Labs makes.

What you will find is a solid 3g dose of L-citrulline that has been combined with malate at a 2:1 ratio to form citrulline malate. It’s a powerful workout booster and provides all the citrulline benefits that you’re looking for in a straightforward, simple and affordable product.


  • 3g L-citrulline malate per serving (2:1 ratio)
  • No additional ingredients – just pure citrulline malate
  • Provides all the benefits of citrulline
  • Made by an excellent company
  • All-natural – derived from watermelon
  • Great value
  • The best citrulline supplement overall

What’s in it:

  • 3g L-citrulline malate (2:1 ratio)
  • Nothing else!

Who makes it: This product is made by Transparent Labs, a rapidly growing supplement producer based in the US. For years, Transparent Labs has set itself apart from the competition by being, well, transparent! They clearly list every ingredient they use, and they include clinically proven dosages of the active ingredients in all of their products.

They use all-natural products wherever possible, and avoid artificial additives, unnecessary fillers and other “fluff” found in many other nutrition supplements. Overall, they are one of our top recommended supplement producers, due to high product quality, reasonable prices, and excellent customer support.

Bottom line: This is a highly effective citrulline supplement that offers this potent amino acid at a clinically effective dose. It’s offered at an excellent price per serving and comes from one of the most respected brands in the business.

Where to Get It

2. KAGED MUSCLE Citrulline


KAGED MUSCLE Citrulline uses citrulline derived from a natural fermentation process. It’s kosher, vegetarian, hypoallergenic, non-GMO, gluten-free, and highly effective. At 2g per serving of pure L-citrulline, there are no fillers, sweeteners or other junk. Whether you’re using this as a workout booster or as a general health aid to reap the benefits of L-citrulline, you’ll find that this product is an excellent choice for your needs.


  • 2g L-citrulline per serving
  • Uses naturally derived fermented citrulline
  • No other ingredients
  • Unflavored
  • Converts to L-arginine in the body
  • Antioxidant effects
  • Powerful workout aid
  • Great value

What’s in it:

  • 2g fermented L-citrulline

Who makes it: This product is made by KAGED MUSCLE, a newly founded but rapidly growing supplement company. KAGED MUSCLE was founded by a team that spent over 28 months traveling the world, researching natural ingredients to use in their nutritional products.

Drawing from traditional medicine, ayurvedic principles, western exercise science, and other sources, KAGED MUSCLE combines many approaches to form a holistic approach to fitness supplementation. Their products are bold, pure, and have been very well received by the fitness community.

Bottom line: If you’re looking for a strong citrulline supplement made by a well-respected and innovative company, this is a great choice. It’s a simple supplement, containing nothing but naturally derived L-citrulline – and that’s exactly what you want.

The citrulline benefits are significant enough to warrant using this product strictly on its own, and KAGED MUSCLE provides just that; pure L-citrulline at an affordable price.

Where to Get It

3. BulkSupplements Pure L-Citrulline


BulkSupplements Pure L-Citrulline is a simple, pure, cheap and versatile citrulline supplement. It comes in a no-frills bulk bag, as all BulkSupplements products do. This company focuses on keeping the quality of its products high while keeping costs very low by using simple formulas, simple packaging, and simple marketing.

With 2g of L-citrulline and 1g of DL-Malate in each serving, this product is a great overall choice if you plan to add citrulline to your routine. It’s lab tested for purity and contains no fillers or additives.


  • 2g L-citrulline and 1g DL-malate per serving
  • Citrulline and malate work synergistically together
  • Clean and pure, no fillers
  • Lab-tested for purity
  • Very affordable
  • Made by a great company
  • Well reviewed

What’s in it:

  • 2g L-citrulline
  • 1g DL-malate (malate helps to boost energy levels, and is often combined with citrulline to form citrulline malate)

Who makes it: This product is made by BulkSupplements, a large scale producer and wholesaler of a huge range of supplement products and ingredients. As the name suggests, this company focuses on bulk sales and actually ends up supplying pure ingredients to many of the large supplement manufacturers. By buying BulkSupplements products, you can go direct to the source so to speak and save money in the process.

Bottom line: It comes shipped to your door in a plain white bag – as simple and affordable as possible. But while the product is very affordable, the quality is also very high. BulkSupplements is known for their pure, tested and lab-verified ingredients, and if you see citrulline user reviews of this product, you’ll know that this is a high-quality option.

Where to Get It

4. Hard Rhino L-Citrulline DL-Malate


Hard Rhino L-Citrulline Dl-Malate is a powdered citrulline product that combines L-citrulline and DL-malate in a 1:1 ratio. This translates to essentially 1.5g of L-citrulline and 1.5g of malate per serving. No other ingredients are added, making this a simple and pure product and a great choice for many.


  • 3g L-citrulline Dl-malate per serving (1:1 ratio)
  • Lab-tested for purity
  • Made by a good company

What’s in it:

  • 3g L-citrulline Dl-Malate (1:1) ratio – essentially, 1.5g L-citrulline and 1.5g Dl-malate

Who makes it: This product is made by Hard Rhino, a large scale producer of bulk supplements at affordable prices. Hard Rhino focuses primarily on simple and pure formulas, and they manufacturer many supplements in-house. They are a quality company, well-reputed for having quality products and good customer service.

Bottom line: It’s offered at a reasonable price, and comes from a good company. The only real downside is that the 1:1 ratio of citrulline to malate means that there is less L-citrulline in each serving than is contained in most products on this list.

Where to Get It

5. PrimaForce Citrulline Malate

Primaforce Citrulline Malate

PrimaForce Citrulline Malate is made by a well known and reputable company. Citrulline malate is a compound of L-citrulline and DL-malate, two ingredients that work synergistically to produce impressive results.


  • 2g citrulline malate per serving
  • Unflavored and pure
  • No unnecessary fillers or additives

What’s in it:

  • 2g citrulline malate (ratio not listed)

Who makes it: This product is made by PrimaForce, a large supplement company that focuses on creating pure products that can be easily stacked. Instead of making complicated blends of many ingredients, PrimaForce prefers to produce simple supplements that can meet the needs of their customers, and that can easily be “stacked” with other PrimaForce products for even better results. They are a well known and well-respected company.

Bottom line: The only real downside is that the ratio of citrulline to malate is not listed. Most products that use citrulline malate or a separate combination of these ingredients will list a ratio, making it clear how much of each base ingredient is included. This product does not make the ratio clear (it is likely 1:1, but again, it’s difficult to say for sure).

Where to Get It

6. NOW Foods L-Citrulline


NOW Foods L-Citrulline is a good choice for citrulline pills that offer a convenient and easy way to supplement with this beneficial amino acid. The dosage is 1.2g per tablet, but the citrulline pills form makes it easy to take multiple tablets, if desired.


  • 1.2g L-citrulline per serving
  • L-citrulline pills for convenience
  • Simple and pure formula
  • Made by a great company
  • Affordable

What’s in it:

  • 1.2g L-citrulline

Who makes it: This product is made by NOW Sports, a division of NOW Foods. NOW Foods is one of the largest manufacturers of health supplements out there, producing thousands of products ranging from multivitamins to protein powders to frozen health foods. NOW is a highly regarded and trusted brand, and their products are held to very high standards.

Bottom line: Overall, if you’re looking for citrulline pills instead of the more popular citrulline powders, this is a great choice. The convenience of pills is definitely nice, although it is a bit more restrictive in terms of dose customization. With that said, the product is only 1.2g per serving which is a bit lower than most.

Where to Get It

7. Nutricost L-Citrulline Malate


Nutricost L-Citrulline Malate is a high-quality citrulline supplement made using a 2:1 ratio of citrulline to malate. This is regarded as the most effective ratio to use, as it fully captures the benefits of both beneficial ingredients.


  • 3g L-citrulline malate per serving
  • Effective 2:1 ratio
  • Unflavored and pure
  • A pure and simple formula
  • Good company

What’s in it:

  • 3g L-citrulline malate (2:1 ratio)

Who makes it: This product is made by Nutricost, a large supplement company that focuses on developing simple and effective products using “only what you want, nothing you don’t”. In other words, they use pure ingredients and research-backed formulas to make effective nutritional products, from top citrulline supplements to multivitamins and beyond.

Bottom line: It utilizes the most effective 2:1 ratio of citrulline to malate, and provides helpful benefits. It’s made by a well known, respected firm. The only downside is that it’s a bit more expensive than most similar products.

Where to Get It

8. Source Naturals L-Citrulline

Source Naturals L Citrulline

Source Naturals L-Citrulline comes in the form of L-citrulline pills. With 2g of pure L-citrulline in each serving, this product provides all the impressive health benefits of this amino acid in a simple and convenient package.


  • 2g L-citrulline per serving
  • Citrulline pills for convenience
  • 1g per pill, making adjusting citrulline dosage very easy
  • Made by a good company

What’s in it:

  • 2g L-citrulline
  • Some binders/fillers, including maltodextrin, magnesium stearate and more

Who makes it: This product is made by Source Naturals, a large supplement firm founded in 1982. Source Naturals was founded on the principle of trying to help their customers achieve their optimal health potential, and their products range from everything to top L-citrulline supplements to multivitamins to probiotics. They are a good company with a hard-earned reputation.

Bottom line: They are hard tablets instead of capsules, which is why there are some fillers/binders used in the product. They certainly help deliver the benefits of citrulline, but unfortunately, they are a bit overpriced for what they are.

Where to Get It

9. Allmax Nutrition Citrulline Malate

Allmax Nutrition Citrulline Malate

Allmax Nutrition Citrulline Malate is a citrulline malate supplement offering a pure, simple and effective formula. With 2g of citrulline malate per serving, at a 2:1 ratio.


  • 2g citrulline malate per serving (2:1 ratio)
  • Helps improve blood flow and nutrient flow
  • Supports NO production
  • Made by a good company

What’s in it:

  • 2g citrulline malate (2:1 ratio)

Who makes it: This product is made by Allmax Nutrition, a supplement firm dedicated to creating high-end fitness supplements. They produce a wide range of products, but their focus has always been on creating effective workout supplements for the growing athletic community.

Bottom line: This is a good choice that combines the synergistic benefits of citrulline and malate. It’s formulated at the clinically tested 2:1 ratio and offers a full 2g per serving. It’s a good product, but for the price, there are better options out there.

Where to Get It

10. Infinite Labs L-Citrulline


Infinite Labs L-Citrulline is a simple product designed to deliver the benefits of citrulline in its pure form. It offers 1g of citrulline per serving, which is definitely on the low side, but of course, multiple servings can be taken if desired.


  • 1g L-citrulline per serving
  • Pure citrulline, with no fillers
  • Made by a good company


  • Lower than average L-citrulline dosage
  • Expensive for what it is

What’s in it:

  • 1g L-citrulline

Who makes it: This product is made by Infinite Labs, a medium-sized supplement firm that was renamed in 2009 and has been growing rapidly ever since. They use a unique approach to supplement development, focusing on pure and clinically tested ingredients to craft their award-winning supplement products.

Where to Get It

Frequently Asked Questions About Citrulline Supplements

What is Citrulline?

Citrulline, or L-citrulline, is an amino acid that is found in some foods naturally. It’s considered a non-essential amino acid and can provide a number of important benefits.

In supplement form, citrulline is typically extracted from watermelon, which has the highest natural concentration of the helpful amino.

In the body, citrulline is essentially converted by your kidneys into L-arginine and nitric oxide. Both of these compounds are key to blood vessel health, circulation, immune support, and nitric oxide production.

For athletes, the real benefit lies in nitric oxide’s ability to improve blood flow by relaxing arteries and blood vessels.

There are a lot of benefits of citrulline, which we’ll go over in the section below.

We do get some citrulline from our diet naturally, as L-citrulline is found in some foods including watermelon, legumes, meats, and others.

Unfortunately, it’s nearly impossible to get ideal quantities of this helpful amino acid from the diet alone, which is why so many people use citrulline supplements to increase their daily intake.

What is Citrulline Malate?

L-citrulline is the pure version of the amino acid in its isolated form. But a lot of the time, you’ll see “citrulline malate”, “L-citrulline DL-malate”, or another similar phrase on a product’s packaging or ingredient list. So, what is citrulline malate, and is it as good as regular-old citrulline?

Citrulline malate is simply citrulline with added malic acid, which is a natural substance found in many fruits and vegetables. Malic acid has many benefits, most notable of which are its effects on energy levels.

Essentially, malic acid (or malate) helps stimulate the Krebs cycle, which is the natural process of turning nutrients into energy for use. This may result in higher energy levels and better-sustained energy, which is particularly useful for working out.

Malate is often added to citrulline because the two offer synergistic benefits, particularly for exercise. In general, citrulline malate products are highly recommended for athletes and weightlifters, while standard L-citrulline supps might be a better choice for those looking strictly for the blood pressure and ED-related benefits of this amino acid.

In products that do use citrulline malate, you’ll typically notice a ratio listed, such as 2:1 or 1:1. This refers to the ratio of citrulline to malate used in the product.

The most popular is 2:1 (2 parts citrulline to 1 part malate), but 1:1 is also common. For example, a 3g dose of citrulline malate 2:1 would contain approximately 2g of L-citrulline and 1g of malic acid.

What Are the Uses & Benefits of Citrulline?

Citrulline is a powerful addition to any supplement regimen. It has a number of important benefits, both as a fitness tool and as a general-purpose health supplement.

Some L-citrulline benefits include:

As you can see, the benefits of L-citrulline are quite extensive. For the purpose of this guide, we are going to primarily focus on the exercise benefits of citrulline, but it’s also important to note that these supplements can be highly beneficial for those struggling with ED and/or high blood pressure.

If you have these issues, you should speak to your doctor about using citrulline supplements.

The benefits are extended even further when the amino is added to malate to form citrulline malate, which it often is. Citrulline malate offers all the benefits of citrulline, with the added benefit of increased energy levels from malic acid.

Many of the citrulline products we recommend use citrulline malate, while others use pure L-citrulline.

Who Can Benefit from Citrulline?

As you can probably tell from the list of benefits above, a lot of people can experience benefits from these supplements. However, the key groups that will notice the most positive effects are:

  • Athletes – whether you’re a strength athlete, a runner, a basketball player or just a fitness enthusiast, you can benefit from a strong citrulline supplement. These products can help to boost nitric oxide production, decrease the onset of physical fatigue, improve blood flow to muscles, and even decrease muscle soreness after workouts. If you’re an athlete, there’s no need to explain to you why these benefits could significantly improve the results you see!
  • Weightlifters – while all athletes/fitness enthusiasts can benefit, weightlifters are perhaps the group that will see the most benefit. Nitric oxide levels have a big effect on exercise performance, so whatever we can do to increase nitric oxide production we absolutely should do! Additionally, while citrulline is primarily thought of as a strong pre-workout booster, don’t forget about its recovery benefits, as well. By helping to reduce soreness and speed recovery time, powerful citrulline supplements can get you back to the gym faster than ever! You can consider stacking them with a good BCAA supplement that helps recovery for even more benefits.
  • Men with Erectile Dysfunction (ED) – erectile dysfunction is a common condition that affects millions of men and makes having a normal sex life very difficult. For those looking for a more natural alternative to drugs like viagra, citrulline may help. Citrulline improves blood flow, which helps to prevent the symptoms of ED. Clinical trials studying the results of citrulline supplementation on erectile dysfunction are promising, but not conclusive at this point. Citrulline is typically safe to take, so it’s worth a shot to try it – although you should speak to your doctor if you are on any other medications, to avoid potential interactions.
  • Those with High Blood Pressure – if you suffer from high blood pressure, you should speak with your doctor about trying L-citrulline supplements. L-citrulline is a precursor to arginine, which helps increase nitric oxide production, which in turn helps blood vessels dilate, potentially reducing high blood pressure. Again, this is something you should speak with your doctor about before continuing.

If you are using citrulline for erectile dysfunction or for high blood pressure, your first point of action should be to speak with your doctor to see if that’s feasible. We do not recommend taking supplements for any serious medical condition without speaking with a medical professional first.

How Do I Take Citrulline?

Citrulline typically comes in powder form, which needs to be mixed into water or other liquids. Some people also throw their serving into a pre-workout or post-workout recovery shake. How you take it is not overly important in this regard.

You should also take note of any manufacturer’s recommendations on the product you’re using.

L-citrulline does not need to be taken with meals. Some manufacturers recommend taking it on an empty stomach, actually. This is not strictly necessary, and research has not shown a definite answer as to whether it’s more effective to take with or without food.

Are There Any Side Effects of Citrulline?

L-citrulline is a natural amino acid, and no side effects have been reported in clinical trials. With that said, the supplement can interact with certain drugs, which can lead to side effects. If you are taking nitrates for heart disease, any blood pressure medicine, or an erectile dysfunction drug such as Cialis or viagra, you should speak with your doctor before using a citrulline supplement.

Occasionally, people have reported minor stomach upset/nausea, usually when they take high doses of citrulline on on empty stomach. If this happens to you, simply switch to taking your dose around mealtime.

How Do I Pick a Good Citrulline Product?

There are a number of companies producing high-quality citrulline supplements, which makes it a difficult choice to pick the best option.

With so many options, you’ll want to consider the following factors in choosing the right citrulline supplement for you:

  • Citrulline Content – clearly, the most important factor is the actual amount of l-citrulline in each serving. A lot of citrulline products will have a citrulline dosage size of around 2g of in each serving. Experts recommend a citrulline dosage of 6-8g taken shortly before workouts – so, look for a supplement with a good dosage size, or just know that you may need to take multiple servings of lower-dosed products.
  • L-Citrulline vs Citrulline Malate – citrulline is very effective on its own and typically does not need to be mixed with any other ingredients in order to be useful. With that said, one beneficial addition is DL-Malate, the salt of malic acid. Malate is known as an energy booster and performance enhancer, so it’s only natural that it’s added to citrulline to improve exercise performance. You may see malate listed as a separate ingredient, or as simply “citrulline malate”, which is essentially the two ingredients combined. You may also see a ratio, like “citrulline malate 2:1”, which means 2 parts L-citrulline for every 1 part malate.
  • Other Ingredients – beyond citrulline and malate, there shouldn’t be anything else in the best citrulline supplements. Some products may be flavored or have other fillers, which is not necessary. Citrulline powders are generally flavorless (although some people may enjoy the flavored products). Some products offered in capsule form use binders/fillers, while others offer pure ingredients in a clear capsule. Choose a simple formula with no added fillers for the best results.
  • Brand quality – who makes the product, and what is their reputation? You’ll want to stick with well known, high-quality companies in order to get the best product possible. On our list, we’ve only picked products from well-reputed and trustworthy companies. On the other hand, if you do your shopping elsewhere, be sure to read citrulline supplement reviews to get a better idea of the company you’re buying from and the quality of their products.
  • Value/price – like all purchases, you should consider the value of each individual product you’re considering buying. And beyond just the overall price, be sure to consider the price per serving, as well as the overall quality/value of the product.

How Did We Pick These Supplements?

Our core value at Top10Supps is transparency which is why we are open about how we pick the supplements that you just saw. You can read more about our supplement ranking methodology here.

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