Last updated: 17/10/2022

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Nowadays having a good diet or at least trying to have a balanced diet with the necessary nutrients has become a big challenge due to the hustle and bustle of day to day activities.

So taking dietary supplements can be an option to improve performance, but which one to take and which brands to buy? Our goal is that you have quality and complete information to make the best decision in your purchases; from benefits and contraindications, consumer profile and characteristics of what is on sale in the market.


  • L-Arginine is a semi-essential amino acid, which in its dietary supplement version is ergogenic in nature, i.e. it improves energy production and therefore the physical performance of its consumers.
  • As it is a dietary supplement, it is recommended to consult your doctor, nutritionist or trainer to verify doses according to the purpose you want to take L-Arginine, in order to reduce or avoid side effects.
  • Among its benefits, L-Arginine is known to promote blood circulation, stimulate the immune system, accelerate muscle growth, reduce periods of stress and post-workout fatigue, among others.

The Best L-Arginine: Our Picks

Buying guide

One of the main uses of dietary supplements is to provide the body with what it lacks naturally, either because of a person’s natural condition or because of external agents such as limiting work schedules or lack of knowledge of specialised products whose function is to level and optimise the body. Join us to see how L-arginine helps with this.

L-Arginine is a semi-essential amino acid, which in its dietary supplement version is ergogenic in nature, i.e. it improves energy production and therefore the physical performance of its consumers.
(Photo: Dolgachov/

What is L-arginine?

Nowadays there is a wide variety of supplements to satisfy different health or aesthetic needs, among them L-Arginine stands out. This amino acid chemically called nitric oxide (NO) has the function of dilating blood vessels and improving blood flow.

What are the benefits of L-arginine when consumed?

L-Arginine not only improves blood circulation, but has also been found to have great benefits and properties for the immune system as it transports more oxygen to the body’s tissues and organs, thereby reducing the risk of possible injuries related to intense physical training that weaken defences, making people more vulnerable or prone to disease. In its aesthetic variant, L-Arginine is used to combat obesity, increase muscular endurance and increase the capacity to transport important nutrients to improve physical appearance inside and out, which is why its sale is popular in sporting venues. Some of the results of taking this valuable amino acid that few people know about are that it contains anti-ageing properties and prevents and restores hair loss because L-Arginine agents repair damage caused by external environmental factors, such as exposure to UV rays or smog.
  • Promotes blood circulation
  • Lowers blood pressure levels
  • Stimulates the immune system
  • Combats obesity by reducing fat
  • Extends the period of fatigue during physical exercise
  • Supports muscle growth
  • Detoxifies the liver
  • Anti-ageing and hair loss
  • Increases stomach acidity
  • Promotes allergic reactions
  • Causes swelling of the eyes and skin rashes
  • Increases the risk of bleeding
  • Causes shortness of breath
  • Causes diarrhoea

Who can and cannot take L-arginine?

While purchasing this dietary supplement does not require a prescription for its sale and consumption, it is important to consider which people may be partially or completely limited in their intake of this amino acid.
Who is Who is not
High performance athletes People with kidney or liver disease
Pregnant women with high blood pressure People already on medication for hypertension
People undergoing weight loss treatment Diabetics

As you saw in the table above, these are some L-Arginine consumer profiles, so in each case it is advisable to consult a doctor or specialist to avoid contraindications. It is essential to mention that the use of this supplement should be avoided if you are taking medication for high blood pressure, diuretics, antidepressants, nitrates or anticoagulants due to the reactions produced when combined with L-Arginine.

How much do L-Arginine products cost?

As L-Arginine has become popular, there are various forms of L-Arginine in capsule, powder or liquid form, as well as in different sizes and quantities as required. The prices of the supplement vary from 300 MXN to just over 1,200 MXN depending on where you buy it and whether the supplement is combined with other amino acids, vitamins or substances.

No supplement can replace a healthy diet.
(Photo: Choreograph/

Buying criteria: factors that allow you to compare and rate the different presentations of L-Arginine as a dietary supplement

When we start taking this type of supplement it is necessary to consider certain characteristics when choosing the product that best meets the individual needs of each person. We would therefore like to show you the aspects you need to consider in order to make a good choice and purchase:

Powder or capsule presentation and dosage

The major decision of which presentation to take will depend on the dosage prescribed by doctors, nutritionists or trainers; there are 3 presentations to find L-Arginine: in capsules, powder and liquid, the latter being so uncommon that we will show you the pros and cons of the capsule and powder version. The powder version is more convenient if the prescribed intake is high, in addition to the variety of flavours offered to the public is greater making it more pleasant to choose one of your preference, by choosing this presentation hydration is promoted by requiring dissolve in water. Leaving aside the advantages mentioned above for the powdered version, the capsule presentation makes it easier to transport and avoids some problems related to taste as it is slightly bitter; capsules also preserve the product better as it is not exposed to oxidation or humidity in the environment.

Remember that hydration is essential when taking any supplement.
(Photo: Simons/

L-arginine with or without additives?

This criterion will depend on whether other amino acids, vitamins or supplements are required at the time of ingestion, and will be determined by who suggests their use to meet the needs of each person. Among the most common, you can find a mixture of L-Arginine with amino acids or vitamins; to name a few examples of this we find Lysine (essential amino acid), whose function is to help the body from injuries or surgeries for its quality to better absorb calcium in the bones; or in the case of its presentation with vitamins it is with B complex, where allergic people whose antibodies need a stimulus benefit.

Arginine Alpha-Ketoglutarate (AAKG)

Although you have read so far about the benefits of L-Arginine on its own, you should also know that combined with the molecule in the form of Alpha-Ketoglutarate salt, AKKG for its acronym in English, it will be potentiated and you will obtain better results. Its function is not very different from taking pure Arginine, however AAKG is popularly known for being a powerful muscle catabolic, improving protein synthesis within the body; as well as stimulating hormones such as growth hormone which ensures the absorption and correct amount of necessary nutrients that naturally with a diet can not be covered.

(Featured Image Photo: Losev/