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The Best L-Citrulline of 2025
Written By Supplement Institute Review Team
L-citrulline is an amino acid-focused supplement formulated to help you stay active throughout the day. It’s concentrated and can be used regularly without any health concerns. Whether you’re a gym enthusiast looking to enhance stamina or a 9 to 5 office worker who gets tired during the day, L-citrulline can help you maintain a more active lifestyle.
We’ve reviewed the best L-citrulline of 2025, with Nutricost’s L-citrulline capsules topping our list. They’re an excellent choice for boosting your energy and stamina, making them ideal for maximizing your workouts. No matter your lifestyle, these L-citrulline products are just what you need for a quick, healthy boost.
The Best L-Citrulline Products of 2025
Nutricost L-Citrulline
Best Overall
Nutricost’s L-citrulline comes in capsule form with 750 mg of a high-quality product. Each bottle contains 180 capsules that can last for two to three months with ease. It features a GMO and gluten-free formula with no side effects on your dietary requirements.
These capsules are carefylly formulated for extra energy, so you can take them pre, post, and inter workout for maximum efficiency. Furthermore, they’re made in a GMP compliant, FDA registered facility, ensuring their genuinity and quality. The purity and effectiveness of these L-citrulline capsules earned them the top spot on our list.
NOW L-Citrulline
Best for Sports Nutrition
Designed for athletes, NOW L-citrulline is a gluten-free, GMO-free, dairy-free, and kosher-certified supplement that allows people of all diet requirements a safe use. It features 1200 mg L-citrulline concentration per capsule, so you have an extra-strength product at your convenience. This product is formulated with extra nitric oxide that ensures you achieve relaxed physical and mental health.
Moreover, it contains healing agents that support a healthy immune system, so you don’t get sick easily. This citrulline is an NPA A-rated GMP certification that guarantees top quality, tested products with maximum safety. Each pack contains 120 capsules to last for 60 days or more.
Double Wood L-Citrulline
Best for Muscle Recovery
Double Wood’s L-citrulline is a capsule form supplement formulated for simple consumption. Each bottle contains 210 capsules ensuring a long-lasting and worry-free use. It contains GMO-free ingredients, providing no harmful side effects on your health. Moreover, these supplements are safety tested for heavy metals and microbes, so you get the product in its purest form.
It supports nitric oxide synthesis, providing maximum support to blood flow circulation and energy boost when lifting weights. It also increases your energy levels when performing aerobics and other exercises for muscular endurance. Furthermore, they have 1200 mg citrulline per capsule, providing you with a concentrated formula for maximum efficiency.
BulkSupplements L-Citrulline
Best Vegan Option
BulkSupplements’ L-citrulline is best suited for athletes and bodybuilders to use before their workout, ensuring maximum athletic endurance. It’s designed to give you physical and mental relief by widening the arteries and veins and increasing blood flow. It supports the cardiovascular system as you maintain the diet and exercise.
Furthermore, it’s a vegan pre-workout powder that fortifies your immune system, ensuring you remain happy and healthy. This circulation supplement aids the libido allowing you to maintain your sexual life and timing. Moreover, it contains nitric oxide, which improves and increases your blood flow. It also comes in powder form, so you can blend it with all kinds of food and drinks.
Doctor’s Best L-Citrulline
Best Soy-Free Option
The Doctor’s Best L-citrulline is specially formulated to manage your metabolism. It’s an unflavored powder that promotes easy consumption. It comes with nitric oxide promoting vascular health and metabolism for better weight management.
Moreover, it includes protein that supports muscle synthesis and relieves muscular fatigue. It also maintains your muscles and improves circulation to be calm physically and mentally. Furthermore, it is a GMO, gluten, and soy-free product designed for people with all kinds of dietary requirements.
L-Citrulline: A Buyer's Guide
To successfully purchase an L-citrulline supplement, you’ll need adequate knowledge about the product. Our guide will help you pick a suitable product. Here is a list of things to keep in mind when shopping for L-citrulline products.
Ingredients
L-citrulline is available in different versions. Some versions come with fully concentrated ingredients, while others are mixed with extra nutrients to ensure that the formula is not too heavily focused on one ingredient. Out of everything, the most common ingredient you will find in all supplements is L-citrulline.
Brand
One of the most important considerations is the brand you want to purchase. A reliable provider will give you high-quality items that you may consume right away for immediate effects. That’s why we’ve selected the most well-known brands that are highly recommended by specialists.
Quantity
Depending on your age and current health, 1 to 2 capsules per day is the optimal dosage to use for L-citrulline supplements. It’s usually a good idea to obtain advice from a medical practitioner regarding your health and consumption.
A regular bottle has 60 capsules that will last for one month, but you may upgrade to 120 or 180 capsule bottles for significantly longer use. Larger bottles are often favored by people who don’t like to shop often.
Packaging
Typically, L-citrulline is packaged in plastic bottles with an airtight seal, allowing you to consume them for an extended time without losing quality. Another type of packaging is a plastic bag, which is more prevalent if you choose a powder-based supplement. Plastic is a better package option than glass because of its resistance to damage.
Usage
Are you looking for L-citrulline for boosting energy or for health requirements? Regardless of your choice, it’s essential to consume an adequate amount every day. The recommended intake for capsules is 1 to 2 per day with water or milk. However, it’s necessary to take dosage recommendations from your physician.
The Perks of Taking L-Citrulline
Better exercise
Exercising is an essential part of one’s routine. You need to be active regularly for a long and active lifestyle. There are different exercise routines like strength training, cardio, and HIIT. However, your body needs enough energy to perform these exercises correctly.
L-citrulline might help you build stamina and improve cardiovascular activities. However, it’s essential to opt for the pills suggested by a nutritionist before taking them. As an amino acid, L-citrulline will provide you with protein ensuring your body has enough energy to complete the exercise.
Soothes nerves
Your body needs relaxation after a rough day at work. However, it is a bit hard to give yourself enough sleep after a demanding schedule. L-citrulline is rich in nitric oxide, which relaxes your arteries and improves blood flow in the body.
These supplements are suggested for people who suffer from high blood pressure and hypertension. If not treated properly, these issues can lead to heart problems in the longer run. People with blood pressure concerns should take 3 to 6 grams of L-citrulline.
Manages heart diseases
Heart diseases have become more common recently. Adults and children both can suffer from heart diseases. Taking a suggested amount of L-citrulline can soothe your vessels and enhance your overall functionality. However, it’s essential to maintain a healthy lifestyle instead of just relying on supplements.
Balances hormones
L-citrulline has shown a rise in the growth hormone, which helps your body manage stress after a workout session. Most men have also experienced an improvement in erection after taking this supplement. You need to consult a doctor about dosage before consumption for such dysfunctionalities.
Types of L-Citrulline Supplements
Capsules
When considering L-citrulline, capsules are the first and primary option that springs to mind. They’re suitable for stomach trouble individuals because of their timed-release features. You can find them in capsule or tablet form.
Aside from that, they are easy to transport and do not risk spilling parts wherever you go. Capsule-based supplements are also easier to ingest because they do not need to be blended in liquids such as milk or smoothies. Additionally, they do not have that strong, pungent taste that stays in your mouth for a couple of minutes or hours.
They are not suitable for kids and might be a choking hazard. Capsules are concentrated, but they require time to react.
Syrup
Supplements are also available in syrup form. This version comprises a thick liquid that you can consume instantly without the need for water (or other beverages). The syrup has a concentrated formula that immediately affects the body. They’re suitable for people of all ages.
You can mix the syrup with food drinks or just take it as it is. Some syrups have a concentrated taste and texture, which might not be as pleasant. They can also leave a strong aftertaste.
Powder
Because of the bitter taste and difficulty going through the throat, most individuals dislike taking tablets. Powdered supplements are a great way to get your nutrients if you enjoy milk and smoothies. One disadvantage of powder is that it must sometimes be ingested in quantities that are difficult to swallow.
L-Citrulline Concentration Comparison
L-citrulline is available in different types: L-citrulline and Citrulline Malate.
L-Citrulline
The most natural form of supplement is L-citrulline. Your body is responsible for creating its own supply of L-citrulline. Although it is present in natural ingredients like watermelons, you can improve your performance to a significant extent by taking supplements. In addition, it increases your energy levels so that more oxygen and nutrients can enter your body.
L-citrulline also reduces ammonia production from your body which is known to make you tired much quicker. It also increases nitric oxide levels, which can help widen your blood vessels, enabling more oxygen and nutrients to reach your muscles. This concentrated version is appropriate for those seeking major health advantages.
Citrulline malate
Citrulline Malate is another version of L-citrulline designed to provide similar benefits. However, it comes with the addition of malic acid. Although it sounds simple, malic acid can significantly impact your health.
Increasing malic acid in your diet can improve your performance while increasing your performance level. These supplements are prescribed to people with health conditions. Citrulline Malate is a newer version of L-citrulline, but it is considered more promising. It can also increase your recovery from exercise, making it a top choice for new exercisers and athletes.
Conclusion
L-citrulline is an essential supplement that helps you improve performance and maintain your activity level. They are available in different forms. You can check with your general physician to confirm whether it would have any side effects on your health or not. These supplements are available in different formats but what you choose depends on dosage requirements, age, and usage.
People Also Asked
Can you consume L-citrulline every day?
Consuming 6 to 7 grams of L-citrulline daily is effective in normal cases, but if you have any health conditions, it is mandatory to check with your health specialist.
Can I consume L-citrulline on an empty stomach?
Most people take L-citrulline supplements before exercising, which means it is safe for an empty stomach.
Can kids take L-citrulline?
Yes, kids can take L-citrulline if their regular diet cannot fulfill their nutritional requirements.
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