Current Position and Future Perspectives of Melatonin and Its Supplements in Pulmonary Hypertension

Melatonin, which is secreted principally by the pineal gland at night, affects several cardiovascular conditions including arterial hemodynamics, right ventricle functions, and pulmonary artery functions. Pulmonary hypertension is a hemodynamic and pathophysiological condition defined as an increase of average pulmonary artery pressure exceeding 20 mmHg at rest. In the light of the literature data, as discussed in this study, melatonin and its supplements may play a role in the pathogenesis and treatment of pulmonary hypertension.