L-arginine is an amino acid that is considered semi-essential. You need L-arginine in your diet -- from either food or supplements -- to complement the supply that your body produces. Malnutrition, burns, excessive ammonia production and sepsis are examples of conditions that may necessitate the use of L-arginine supplements. L-arginine supplements are considered generally safe and are widely used, according to Drugs.com. But L-arginine supplements are not recommended for those who have just experienced heart attacks. They aren't advised for those taking insulin or cholesterol medications either.
Dose
There is no standard recommended dose for L-arginine supplements, according to the Mayo Clinic website. Children shouldn't take L-arginine supplements, because not enough is known about potential side effects and adverse reactions in children. Adults typically take 2 g to 3 g of L-arginine supplements three times daily. L-arginine supplements have also been taken in daily doses of 0.5 g to 16 g for up to six months. Always consult your doctor before taking an L-arginine supplement to determine the dose that best suits your needs.
Uses
People take L-arginine supplements for a number of reasons. They are often taken to facilitate recovery from surgery, according to MedlinePlus, a service of the National Institutes of Health, notes. L-arginine, taken in tandem with ribonucleic acid -- RNA -- and eicosapentaenoic acid -- EPA -- before and after surgery is said to shorten recovery time and reduce the risk of infection after surgery. EPA is an omega-3 fatty acid. RNA is a nucleic acid used in cellular reproduction. L-arginine supplements also help remove fluid buildup in those who have congestive heart failure and inflammation in those with bladder problems. The supplements also alleviate leg cramps associated with blocked arteries.
Side Effects and Possible Interactions
L-arginine supplements are not without side effects. Nausea and diarrhea are possible adverse reactions, according to Drugs.com. L-arginine supplements potentiate the effects of medications used to lower blood pressure. In addition, L-arginine can cause allergic reactions, according to the Mayo Clinic websites. Allergy symptoms may include rash, itching and breathing difficulties. L-arginine supplements also affect electrolyte levels, causing increased potassium, chloride and creatinine levels and decreased sodium and phosphate levels.
Dietary Sources
Red meat, poultry and fish are dietary sources of L-arginine, according to Drugs.com. Dairy products, eggs soy proteins and nuts such as peanuts and walnuts also contain L-arginine.
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