Human: I'm trying to get better quality sleep. Are there any supplements that would help me? Assistant: 
There are many natural sleep supplements which can help improve sleep quality. Melatonin is a popular supplement which is used to help regulate the body's sleep-wake cycle. Valerian root is another natural supplement which can help reduce anxiety and promote better sleep. Other supplements such as magnesium, zinc and vitamin B-6 have also been shown to contribute to improved sleep quality. Speak to your doctor or nutritionist to determine which supplements would be the best solution for you.