Buy citrulline

Looking for high-quality citrulline for your training? Then you've come to the right place. In our range you will find L-citrulline malate powder from selected brands, all in the proven citrulline malate 2:1 ratio. Whether for pre-workout pump, endurance, or targeted supplementation of your diet: the amino acid L-citrulline is among the most widely used amino acids among athletes. On this page you will learn everything important about how it works, dosage, and intake, and find the right powder for your goals.

What is citrulline? – The amino acid from the watermelon

Citrulline is a non-proteinogenic amino acid that takes its name from the watermelon (Citrullus lanatus). That is where it was first discovered. Unlike many other amino acids, this substance is not a direct building block of proteins. Instead, it plays a central role in the body's urea cycle, where nitrogen-containing breakdown products are converted into urea and excreted.

The special property of this amino acid: it is converted into L-arginine in the body. Arginine, in turn, is the starting material for the body's own production of nitric oxide (NO). This process is scientifically well documented and one of the main reasons why athletes value this dietary supplement.

Interesting: studies show that oral intake of this compound can raise blood arginine levels more effectively than taking arginine itself directly. This is due to its better bioavailability: the body can absorb and utilize the substance more efficiently.

L-citrulline vs. citrulline malate – What is the difference?

When buying, you will encounter two variants: pure L-citrulline and malate. Both contain the same amino acid but differ in one important respect.

Pure L-citrulline – What is behind it?

The pure form contains only the amino acid without any additives. It forms the basis for all products in this category. In practice, however, the malate variant has established itself as the preferred form in sports, as here the compound is combined with malic acid (malate). In our range you will therefore find exclusively the malate powder in the 2:1 ratio, the variant most commonly used by athletes.

Citrulline malate – The popular combo with malic acid

The malate compound, internationally also known as Citrulline Malate or L-Citrulline Malate, combines the amino acid with malic acid. The common 2:1 ratio means: for every two parts of the active compound, there is one part malate. Malic acid is a natural component of the citric acid cycle, the central energy metabolism pathway in our cells.

What is behind this compound? A combination that delivers both components and represents the most commonly used form in sports. Most studies in the training context were conducted with precisely this formulation.

Which variant is the better choice? For use as a pre-workout booster, the malate combination is the clear recommendation. The combination of amino acid and malic acid is by far the most popular form in sports.

Citrulline effects – How does it work in the body?

Its effect is closely linked to nitric oxide metabolism. In the body, the compound is converted into L-arginine, from which nitric oxide (NO) is in turn formed, a messenger molecule involved in regulating blood vessel diameter. Athletes use this amino acid because they value the so-called "pump effect" during training, which is associated with increased blood flow to the muscles and a better supply of oxygen and nutrients.

Citrulline and arginine – Why the combination is valued

Arginine and this amino acid are often used together. In investigations it has been observed that the combined intake of both substances can raise blood arginine levels more effectively than taking either one alone. A ratio of 1:1 is frequently discussed in the scientific literature. Whether the compound is taken alone or in combination: many athletes deliberately opt for an arginine-citrulline combination.

Citrulline in sports – From strength training to endurance

This amino acid is among the most popular in sports, and not without reason. Whether strength training, endurance, or functional training: from strength athletes to endurance athletes to recreational athletes, many rely on this ingredient as part of their pre-workout routine.

Citrulline as a pre-workout supplement

This amino acid is among the most frequently dosed ingredients in pre-workout boosters. Many athletes value the so-called pump effect, the tight, full feeling in the trained muscles. Whether as a standalone supplement or as part of a training booster: the compound has become nearly indispensable in modern supplement stacks.

Citrulline malate for endurance athletes

The malate variant is also used in endurance sports. Studies have investigated whether this amino acid can influence oxygen utilization and time to fatigue. Athletes report using the supplement to support their recovery after intense exertion.

Effects in men and women

The effects of L-citrulline in men are frequently searched for, especially in the context of training and pump. But the compound is also relevant for women: the amino acid is used regardless of gender and is just as interesting for female athletes as it is for male athletes. Dosage recommendations generally do not differ by gender.

Dosage and intake – How to take it correctly

The right dosage depends on the form of administration and your goal. Here you will find an overview of the common recommendations for this compound.

How much citrulline per day?

Most studies used dosages between 6 and 8 grams per day. For use as a pre-workout, a dose of 6 to 8 grams of the malate powder is recommended, which corresponds to about 4 to 5 grams of pure amino acid plus the malate portion.

When to take citrulline?

For use as a pre-workout, the supplement is taken about 30 minutes before training. According to studies, the highest arginine levels are reached about 1–2 hours after intake. On non-training days, it can be taken in the morning on an empty stomach or with a meal.

Citrulline malate 2:1 powder – flexibly dosed

The powder offers the advantage of flexible dosing: you can tailor the amount precisely to your training. Simply weigh out the desired portion, dissolve it in water, and drink it before training. In terms of taste, it is slightly tart, which many find pleasant. Thanks to the powder form, the compound can also easily be combined with other supplements in your stack.

Buy citrulline at Gigas Nutrition – Products in comparison

With us you will find a carefully curated selection, all in the popular citrulline malate 2:1 ratio. Here is our product comparison:

What to look for when buying citrulline?

You can recognize the best supplement in this category by a few quality criteria:

• Nutritional values and purity: Look for clean nutritional values without unnecessary fillers; use as a pre-workout requires a pure product of high quality
• 2:1 ratio: The standard ratio for the malate compound (2 parts amino acid, 1 part malic acid)
• Dosage per serving: At least 3,000 mg of pure active compound per serving
• Manufacturing: Produced under strict quality standards

With us you additionally benefit from:

• Lightning-fast shipping with short delivery times (ordered by 2 p.m. on business days = shipped the same day)
• Free shipping from 69 EUR (incl. VAT)
• Best price guarantee on all products

Our tip: The NanoPure Citrulline Malate from GN Laboratories combines maximum purity with an optimal 2:1 ratio and is our best-selling product in this category.