Several supplements have been shown to help improve sleep quality. Here's a summary of commonly used supplements for better sleep:

1. Melatonin: Melatonin is a hormone that helps regulate the sleep-wake cycle. It can be beneficial in reducing the time it takes to fall asleep and improving overall sleep quality[^1]. Melatonin is considered fairly safe for short-term use, though common side effects may include headaches, nausea, and daytime drowsiness[^2].

2. Magnesium: Magnesium acts as a muscle relaxant and has been shown to improve sleep efficiency, sleep duration, and reduce early morning awakenings[^3]. Magnesium supplementation can also alleviate anxiety, which is a common cause of insomnia[^4].

3. Valerian Root: Valerian is a herbal supplement that is sometimes used as a natural sleep aid. Some studies indicate it may help improve sleep quality, though results are mixed[^5].

4. Vitamin D: Vitamin D deficiency is linked to sleep disorders, and supplementation has been shown to potentially improve sleep quality[^6].

5. B Vitamins: A combination of magnesium, melatonin, and vitamin B complex has shown beneficial effects in treating insomnia[^7].

Always consult with a healthcare provider before starting any new supplement, especially if you have existing health conditions or are taking other medications, as supplements can interact with medications and may not be appropriate for everyone.