4Low Blood Pressure and Insomnia
In some cases, melatonin may cause the blood pressure to become abnormally low. This means the body cannot carry enough oxygen-rich blood to other organs. As a result, the function of important parts, such as the brain or heart can be affected. Possible signs of low blood pressure include fatigue, confusion, blurry vision, fainting, or dizziness. Fortunately, this side effect is often mild. But if left untreated, more severe complications may happen. [5]
While many people take melatonin supplements to sleep well, it may actually cause insomnia. In most cases, the reason is that people do not take it properly. In general, melatonin can be naturally produced by the body around 7 p.m. This is the best time to take this supplement to help with natural production and signal the brain that the sleeping time is coming. When you take it too late, around 10 p.m for example, it would affect this process. In the long run, insomnia may occur. [6]
