L-Arginine injection is used to assess the function of the pituitary gland. It stimulates the pituitary gland to produce growth hormone for the diagnosis of certain conditions.

Dosage Strength

  • Dosage: 1 – 3ml’s IV, 1 – 2ml’s IM


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Arginine, also known as L-arginine, is classified as an amino acid. Amino acids are the building blocks of proteins. Arginine is not only produced naturally in the body, but it is also found in food sources such as red meat, poultry, fish, dairy products, eggs, and seeds of all types. Arginine also acts as a vasodilator, meaning it helps to dilate (open) the blood vessels increasing blood flow. Arginine is also produced pharmaceutically and given as a supplement in treating many conditions. L-arginine works by converting into nitric oxide in the body. Nitric oxide then dilates the blood vessels, increasing blood flow in the body. L-arginine also stimulates the release of insulin, growth hormone (helps increase muscle mass and reduce the amount of fat in the body), and other substances in the body.

What Is Arginine Prescribed For?

L-arginine is indicated in patients with congestive heart failure (CHF), hypertension (high blood pressure), coronary artery disease, intermittent claudication (recurrent pain in the legs due to blocked arteries), senile dementia, erectile dysfunction, and male infertility.

Other Uses

Arginine may also help with improving athletic performance, improving kidney function after a kidney transplant, pre-eclampsia, boosting the immune system, and preventing inflammation in the digestive tract in premature infants. Topically, L-arginine helps to speed wound healing, increase blood flow to cold hands and feet (helpful in those with diabetes), and for sexual issues in both men and females.

Dosage, Concentration, Route of Administration

Dosage: Seek advice from an appropriately qualified and licensed physician, medical director or other healthcare provider
Concentration: 200mg/ml
Route of administration: IV, IM

Precautions/Side Effects

Not enough is known about how it affects those who are pregnant or breastfeeding. Special precautions should be taken in those with asthma, allergies, cirrhosis, herpes, low blood pressure, recent heart attack, and kidney disease. Because blood pressure is affected while taking arginine, those who anticipate surgery should discontinue use at least 2 weeks prior to the scheduled date to avoid any complications. Children taking arginine need to be closely monitored to avoid serious side effects. Arginine can interact with several different medications, so it is important to speak with your doctor before taking.

Some common side effects include:

  • – Abdominal pain
  • – Bloating
  • – Gout
  • – Diarrhea
  • – Blood abnormalities
  • – Allergies
  • – Airway inflammation
  • – Worsening of asthma
  • – Hypotension (low blood pressure)


Store at controlled room temperature. Protect from light.


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