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Vascular blood flow responses after melatonin and placebo ingestion. Melatonin (3 mg) significantly decreased renal blood flow velocity (RBFV) and renal vascular conductance (RVC), significantly increased forearm blood flow (FBF) and forearm vascular conductance (FVC), and did not alter cerebral blood flow velocity (MCA-BV) and cerebrovascular conductance (MCA-VC). Values are means ± SE. *P < 0.05, significantly different from placebo.
