What is the recommended daily allowance (RDA) range for L-arginine?

The recommended daily allowance (RDA) for L-arginine is typically recognized in the range of 3.5 to 5.0 grams. This amount is based on the roles that L-arginine plays in the body, such as supporting cardiovascular health through the production of nitric oxide, which aids in blood vessel relaxation and circulation. The dosage range allows sufficient intake to potentially provide these benefits without exceeding levels that could lead to adverse effects.

L-arginine is considered a conditionally essential amino acid, meaning that while the body usually produces it, there are times, such as during periods of stress, illness, or intense physical activity, where additional intake may be beneficial. This RDA range is designed to support typical physiological needs without unnecessary excess. Higher dosages, while sometimes used in clinical settings or supplementation, are typically not recommended for general dietary guidelines and can pose risks if taken without medical supervision.