L-Arginine is a popular supplement that can be found in many health stores and pharmacies. It's used to help improve cardiovascular health, reduce muscle soreness, and enhance performance.

But what do you really need to know about this supplement? Is it safe? Does it have any side effects? Read on for the answers to all your questions about L-Arginine.

Safety & Side Effects

In general, L-Arginine is considered safe if taken in small doses.

However, larger doses may cause side effects such as stomach upset, diarrhea, bloating, and nausea. Some people may also experience headaches or dizziness when taking large doses of the supplement.

Sleep & Dose

When taken in smaller doses (up to 6 grams per day), L-Arginine has not been found to affect sleep quality significantly. However, some people have reported feeling more energized after taking higher doses of the supplement which could potentially interfere with sleep if taken too close to bedtime.

The recommended daily dose of L-Arginine is 2-6 grams but this can vary depending on age, lifestyle factors, and other medical conditions so speak with your doctor before starting a new supplement regimen.

Who Should Avoid Taking It

It’s important to note that there are some counterindications for people who should not take this supplement including those with low blood pressure or who are taking medication for high blood pressure as well as those who are allergic to shellfish or susceptible to seizures or asthma attacks as these individuals may be more likely to experience adverse reactions from taking this supplement.

In addition, those with kidney disease should avoid taking large doses of L-Arginine as it can increase the risk of kidney stones or other complications.


L-Arginine is a popular dietary supplement that has been used by athletes and bodybuilders alike to improve performance and reduce muscle soreness--but like any substance you put into your body, there are potential risks involved if taken in excess or without proper consideration of individual health factors such as allergies or existing medical conditions.

If you plan on adding this supplement to your regimen make sure you speak with your doctor first and follow all instructions carefully! That way you can get all the benefits without worrying about any nasty side effects!

All in all, we hope that this article has provided valuable insight into the world of L-Arginine supplements so that you can make an informed decision regarding whether they’re right for you! Stay safe out there!

And, as always, keep on reading...

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