L-Arginine, Everything You Need to Know

L-arginine is an amino acid that helps the body build protein. When you consume foods with amino acids, the body then turns them into proteins, which are a source of energy. It can also help your body produce nitric oxide, and important molecule essential for good health.


L-arginine is an amino acid that helps the body build protein, which is a source of energy.

How should I take l-arginine? 

Clinical practice guidelines recommend that the essential amino acid should be taken with food or a large bottle of water. Do not take arginine with food as it can negatively affect the creation of nitric oxide.

How does l-arginine work? 

Arginine is the precursor of Nitric Oxide. NO is produced from amino acids. Nitric Oxide causes blood vessels to widen to improve blood flow throughout the body, great for the cardiovascular system and helping with high blood pressure. Without NO, things such as blood vessel dilation, blood vessel contraction, immune cell function, and penile erection would not be possible. It also plays a key role in the male erection. In the penis, NO relaxes blood vessels and allows for increased blood flow. The result? A solid erection. Aside from these benefits, l-arginine also plays an important role in the metabolism of protein and carbohydrates, detoxification, and wound healing.

Does l-arginine cause weight loss? 

No, arginine does not cause weight loss. It may increase energy levels and improve your health, which may help you lose weight by allowing you to burn more calories through physical activity.

What does l-arginine treat? 

Arginine can be used to treat the cardiovascular system, narrowing and widening of blood vessels, reducing high blood pressure, and erectile dysfunction. This would always be in combination with dietary changes and eating the right kind of foods as well.

Does l-arginine interact with other medications? 

L- arginine has no known mild interaction with other drugs/ medications, aside from high blood pressure medications. The essential amino acid decreases blood pressure, therefore taking arginine with a high blood pressure medication may cause you blood pressure to go too low. The chances of this occurring are very low. It has little to no interactions with other medications.

Does l-arginine interact with food/ alcohol/ smoking? 

There is no known evidence that states there is interaction with food, alcohol, or smoking. L- arginine is an amino acid which is found in most protein rich foods, so it is advised to take l-arginine in between meals for best results. It is known that smoking can lead to vascular disease, so it is not recommended to smoke in general.

Is l-arginine necessary for human health?

The essential amino acid is extremely important for health. Along with other amino acids like l-citrulline, l-arginine assists in building protein. In most circumstances, l-arginine is naturally produced in the body, however, as we get older it is vital to supply our body with l-arginine to create proteins that assist in energy. Along with synthesizing Nitric Oxide from the amino acid.

Does l-arginine cause/ have side effects?

Side effects are extremely uncommon with l-arginine, but they are possible if it is taken in unreasonably high doses. Side effects may include nausea, vomiting, diarrhea, upset stomach, bloating, indigestion, heartburn, and headache. The likeliness of side effects is very low when used properly.

L-arginine contradictions? L-arginine overdose? 

No contradictions have been reported for l-arginine, there are some possible side effects, but most are highly unlikely. No overdoses have occurred. It is safe even in high doses. There is only a danger when consumed in excessive amounts by children.

L-arginine cost?

L- arginine cost varies depending on quality of product.