L-Arginine – dosing

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The following doses of l-arginine have been studied in scientific research:

By mouth:

  • Congestive heart failure: doses range from 6-20 grams per day, as three divided doses.
  • Organic erectile dysfunction (ED): 5 grams per day. Taking lower doses might not be effective.
  • Preventing inflammation of the digestive tract in premature infants: 260 mg/kg added to oral feedings daily for the first 30 days of life.
  • Chest pain associated with coronary artery disease (angina pectoris): 3-6 grams three times per day for up to one month.
  • Preventing the loss of the effectiveness of nitroglycerin in relieving pain in people with chest pain due to coronary artery disease: 700 mg four times daily.
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