Perfusia-SR is a sustained release 500mg capsule which maintains an optimal level of L-arginine over a 24 hour period with the suggested twice daily usage. L-arginine is a non-essential amino acid, one of the building blocks of protein.
Additional Warnings: Individuals with a known herpes infection should not take L-arginine without also taking lysine, as L-arginine alone has been noted to cause herpes eruptions in susceptible individuals. L-arginine supplementation is contraindicated in a patient with hepatocellular carcinoma.