褪黑激素是一种在体内自然产生的激素，参与调节睡眠-觉醒周期。 它通常用作帮助解决睡眠问题（如失眠或时差反应）的补充剂。
以下是褪黑激素的一些使用方法：
睡眠障碍：褪黑激素补充剂可以帮助调节睡眠模式并改善睡眠质量，特别是对于患有失眠症或其他睡眠障碍的人。
时差反应：褪黑激素可通过重置人体内部时钟来帮助缓解时差反应症状，例如疲劳和睡眠模式紊乱。
延迟睡眠阶段综合症：褪黑激素可以帮助患有延迟睡眠阶段综合症的人，在这种情况下，个人难以入睡并在适当的时间醒来。
轮班工作睡眠障碍：褪黑激素可以帮助上夜班的人在白天入睡。
值得注意的是，虽然褪黑激素通常被认为是安全的，但服用过多会导致嗜睡、头痛和头晕等副作用。 此外，长期安全性尚未确定，服用褪黑激素补充剂可能会与某些药物发生相互作用。 因此，最好在服用褪黑激素之前咨询医疗保健提供者，尤其是当您有既往疾病或正在服用其他药物时。
Melatonin is a hormone that is naturally produced in the body and is involved in regulating the sleep-wake cycle. It is commonly used as a supplement to help with sleep problems, such as insomnia or jet lag.

Here are some of the ways melatonin may be used:

Sleep disorders: Melatonin supplements can help regulate sleep patterns and improve sleep quality, particularly in individuals with insomnia or other sleep disorders.

Jet lag: Melatonin may help alleviate symptoms of jet lag, such as fatigue and disrupted sleep patterns, by resetting the body's internal clock.

Delayed sleep phase syndrome: Melatonin may help people with delayed sleep phase syndrome, a condition in which an individual has trouble falling asleep and waking up at appropriate times.

Shift work sleep disorder: Melatonin may help people who work overnight shifts to sleep during the day.

It's important to note that while melatonin is generally considered safe, taking too much of it can lead to side effects such as drowsiness, headaches, and dizziness. Additionally, long-term safety is not well established and taking melatonin supplements may interact with certain medications. Therefore, it is always best to consult a healthcare provider before taking melatonin, especially if you have a pre-existing medical condition or are taking other medications.