Dietician
Karolina Dobrowolska-Zrałka
L-arginine is an endogenous semi-rather amino acid, necessary for the synthesis of nitric oxide (NO)-a key relay in the circulatory system. Thanks to the blood vessels, the blood supply to the muscles during exercise ("muscle pump") is improved, and men's erection function is stimulated. The body can synthesize L-arginine from precursors, but in a situation of increased demand-intensive training, oxidative stress or erection disorders-endogenous production may be insufficient. That is why L-arginine has gained popularity as a supplement for athletes and people who care about the health of the cardiovascular system and the sexual sphere.
In this article we will discuss: the role of L-arginine in the body and indications for supplementation; Dosage in sport and to improve libido; Principles of use in people with hypertension and vascular problems; Optimal admission timing - before training or at night; interactions with other amino acids (Citrullin, ornitin); as well as potential side effects and contraindications, including in people with herpes or asthma. Thanks to this, you will learn how to use L-arginine safely and effectively to support your training goals and improve the quality of sex life.
L-arginine-a role in the body and for whom is it important?
L-arginine has many functions in the body: it is a precursor of nitric oxide (NO), participates in the urea cycle (removal of ammonia), participates in the synthesis of creatine and prolin, and also affects the immune system. As Donor, it regulates blood vessels, which reduces pressure and improves tissue perfusion. In the muscles, it increases blood flow, and thus - providing glucose and amino acids during exercise, which translates into a better "pumpy" and faster regeneration.
L-arginine supplementation is especially recommended for: strength and endurance athletes who want to increase the intensity of training; people with erectile dysfunction caused by insufficient blood supply to the penis; patients with hypertension and venous diseases; And also for the elderly, in whom natural production is decreasing with age. Regular intake of L-arginine can support the protection of vascular endothelial, reduce the risk of atherosclerosis and improve overall physical performance.
L-arginine dosage in sports and improvement of libido
In sports supplementation, typical doses of L-arginine range from 3 to 6 g per portion, taken 30-60 minutes before training. Such a portion allows maximum increase in production, which improves blood flow and muscle nutrition. Sports research also used protocols with doses of up to 10 g per day, separated into two parts (in the morning and before training), but higher portions may cause stomach discomfort.
To improve libido in men, 5 g L-arginine is most often recommended, divided into 2 years of 2.5 g-one in the morning, the other before bedtime or before planned sexual activity. In clinical trials in patients with mild erection disorders, the dose of 5 g per day for 4-6 weeks significantly improved the hardness and duration of the erection. The combination of L-arginine with zinc and vitamin D further strengthens therapeutic effects in the sexual sphere.
Dosage at hypertension and vascular problems
In people with hypertension, L-arginine supplementation at a dose of 6-9 g per day (divided into 3 portions of 2-3 g) has a moderate hypotensive effect. The mechanism involves expanding the vessels by and improving the endothelial function. In chronic therapy of hypertension, it is better to introduce L-arginine gradually-start from 3 g a day for 2 weeks, and then increase to 6 g, monitoring the pressure.
In vague diseases, such as chronic venous insufficiency or the symptoms of cold limbs, doses of 4-8 g divided into 2-3 portions perimeal circulation perimeter per day and reduce the feeling of heaviness in the legs. The therapy should last at least 8 weeks to achieve lasting results.
When to take arginine: before training or night?
The optimal timing depends on the purpose of supplementation. Before training (30-60 minutes) we take 3-6 g, which maximizes the muscle pump and performance. In the evening or before bedtime it is worth using 3-5 g to support muscle regeneration and production of growth hormones, especially in people practicing in the evenings.
For problems with libido, taking L-arginine 2-3 hours before sexual activity is effective, while long-term-one dose in the evening can support night production and improve vascular functions. In both cases, it is crucial to take arginine on an empty stomach or with a light meal that does not burden digestion, so that it is uncompetitive with other amino acids with absorption.
Interactions with other amino acids (Citrullin, ornitin)
L-arginine and L-citrullin form a synergistic duo-Citrulllin transforms into the liver into arginine, which extends and intensifies the production of no. The 3-5 g Citrullin protocol with 3-6 g of arginine before training can give a better pump than the doses of arginine themselves. Ornitin supports the urea cycle, making it easier to remove ammonia from muscles, which improves regeneration. A mixture of 2-3 g of ornithine with arginine allows you to reduce muscle fatigue.
The "Nitric Oxide Booster" supplements often use proportions: 1 part of the arginine, 1 part of the Citrullin and 0.5 parts of ornithine, which ensures a rapid increase in concentration and longer maintenance of the pump effect.
Side effects and contraindications (herpes, asthma)
L-arginine is well tolerated, but it can cause gastrointestinal discomfort: nausea, diarrhea or bloating, especially at doses above 10 g per day. In people with recurrent herpes, HSV-1 arginine may increase the risk of recurrences because the virus uses L-arginine for replication. In such cases, it is better to use L-Listine in a 2: 1 ratio relative to the arginine.
People with asthma may feel bronchospasm after high doses of arginine - this is due to overproduction and nitrogen peroxide. With asthma, it is recommended to reduce the dose to 3 g per day and observe tolerance. A contraindication is also hypersensitivity to any component of the supplement.
FAQ
1. How much L-arginine take before training?
The optimal dose is 3-6 g L-arginine taken 30-60 minutes before exercise to maximize production and improve the muscle pump.
2. Does L-Arginin help with libido?
Yes, in men with mild erection disorders, a dose of 5 g per day, divided into 2 portions, significantly improves the stiffness and duration of the erection.
3. Is arginine harmful with herpes?
In people with recurrent herpes, HSV-1 L-arginine can promote recurrence, so it is recommended to combine with L-Listine (2: 1) or limit the arginine doses.
4. When to take arginine: in the morning or evening?
Before training (in the morning or afternoon) we take 3-6 g, and in the evening 3-5 g to support regeneration and production of growth hormones.
5. How to combine arginine with Citrullin?
The synergistic protocol is 3-5 g L-citrulline + 3-6 g L-arginine before effort, which extends and intensifies the production of nitric oxide.
6. Does arginine lower pressure?
Yes, at a dose of 6-9 g per day, L-arginine can reduce blood pressure in people with hypertension, but dosage should be introduced gradually.
7. How long can arginine be used without a break?
Cycles 8-12 weeks are safe with regular tolerance monitoring. After this time, it is recommended to break 2-4 weeks before resumption.
Sources
- Nih Office of Dietary Supplements - "Arginine: Fact Sheet for Health Professionals".
- Journal of the International Society of Sports Nutrition - "Position Stand: Safety and Efficacy of Arginine Supplementation".
- European Heart Journal-"L-Arginine Supplementation in Hypertension: A meta-analysis".
- Pubchem-"L-Arginine Compound Summary".
- Healthline-"L-Arginine Benefits, Dosage, and Side Effects".
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