High blood pressure patients can take melatonin, but melatonin is not a drug, belongs to health care products. Melatonin has the role of sleep adjustment, can play a role in improving the efficacy of sleep, improve the quality of sleep, high blood pressure accompanied by insomnia can be appropriate to take melatonin, for the control of blood pressure levels are beneficial. Lack of sleep will lead to sympathetic nerve excitation, resulting in increased blood pressure levels, long-term sleep deprivation may become a cause of the development of hypertension, patients with high blood pressure sleep deprivation, may lead to blood pressure instability, so for patients with high blood pressure accompanied by insomnia, you can usually take melatonin to improve the quality of sleep, to maintain the stability of blood pressure levels. Patients with high blood pressure should take melatonin in moderation, overdose may increase the burden of liver and kidney function, which is harmful to human body. It is recommended that patients with sleep disorders can seek solutions through medical consultation, and should not rely on health supplements.