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What is arginine?
Arginine (or L-arginine) is a semi-essential amino acid, meaning a substance that our body can produce, but which, in certain situations (such as intense physical stress, trauma, infections or during adolescence), it is beneficial to supplement it through diet or with specific supplements.
From a biochemical perspective, arginine is essential as it is the precursor to nitric oxide (NO), a molecule that promotes vasodilation, i.e. the widening of blood vessels. This results in more oxygen and nutrients reaching the muscles, the brain and the tissues – all of which are vital for sporting performance, sexual function and physical recovery.
Arginine is found in various protein-rich foods, such as:
- Red and white meat
- Fish (especially tuna and salmon)
- Dairy products and eggs
- Pulses and nuts (peanuts, almonds, walnuts).
Arginine: what is it used for?
Arginine is often associated with the world of fitness and bodybuilding, but in reality, its benefits extend far beyond sporting performance alone. In particular, the benefits of arginine include:
- Improves physical performance and recovery: thanks to its role in the productionof nitric oxide, arginine is a boon for blood circulation. It is often used as a pre-workout supplement, either on its own or in combination with other amino acids such as citrulline
- Supports the immune system: arginine plays a part in the synthesis of immune cells and helps to strengthen the body’s defences, particularly during periods of stress or intense training
- Beneficial effects on the nervous system: according to some studies, arginine may play a role in improving mental concentration, thanks to increased blood flow to the brain, with positive effects on short-term memory as well;
- Arginine and hair: although it cannot be described as a direct treatment for hair loss, arginine may play an indirect role in hair health by improving circulation in the scalp, thereby helping to create a more favourable environment for hair growth.
Arginine and male sexual health
One of the areas where arginine is attracting increasing attention is that of male sexual health. Thanks to its ability to increasenitric oxide production, arginine promotes vasodilation, i.e. the widening of blood vessels.
Improved blood circulation can contribute to more effective erectile function: this is why arginine has been included in certain studies as a natural support for mild erectile dysfunction or to improve overall performance.
It must be said: this is not a medicine, and in clinical cases, it is always advisable to consult a specialist. It should be noted, however, that many supplements for men’s wellbeing include it precisely for this reason.
When should arginine be taken, and at what dosage?
As with any supplement,arginine also delivers the best results when taken at the right time and in the right amounts. As with other supplements, the dosage may vary depending on the objective: sport, general wellbeing, circulatory support or other purposes.
Most athletes take arginine before training, on an empty stomach, to make the most of its vasodilatory effect. A typical dosage ranges from 3 to 6 grams per day, often in combination with citrulline, which enhances its effectiveness and prolongs its effects.
If taken to improve circulation or general vitality, arginine can also be taken between meals, in cycles of 4 to 6 weeks, followed by a break.
Arginine: contraindications and side effects
One of the questions we are asked most often is: is arginine bad for the heart? The answer is that arginine is safe for most people when taken at the recommended doses. Like any supplement, it is not without contraindications or side effects in specific circumstances.
People who should exercise caution when taking arginine include:
- People with serious cardiovascular problems, such as a recent heart attack or unstable angina, should avoid taking it without medical supervision
- Those with low blood pressure: the vasodilatory effect may exacerbate hypotension
- Patients with recurrentherpes simplex: arginine may stimulate viral replication in susceptible individuals.
Some discussions in the scientific literature have raised the possibility of potential side effects of arginine on the prostate, but there is no definitive confirmation.
The best arginine supplements
If you’re looking for a pure arginine supplement with very high bioavailability, Tsunami Nutrition’s Arginine Pure Kyowa® Quality is an excellent choice. Made from a Kyowa Quality®-certified raw material, which guarantees purity and traceability, this L-arginine powder is perfect for those who want to maximise vasodilation, muscle pump and physical endurance.
Each serving is rich in free arginine in a highly absorbable form, free from sugars, lactose, gluten and additives, making it suitable even for those with intolerances or following specific diets. We recommend taking it as a pre-workout supplement, ideally in combination with citrulline or beta-alanine to enhance its effects.
If you want to experience the benefits of arginine for yourself as part of your daily fitness routine, this is one of the safest and most effective options on the market.
Find out more at the Tsunami Nutrition shop.
