Multiple studies have been conducted on the effectiveness of valerian root on improving sleep. While some have found no benefit, others had insufficient data to make a conclusion, leaving the true impact of this supplement unclear.
Tart cherries have potential as a natural sleep aid due to their positive impact on total amount of sleep, but more research is needed to fully understand their effectiveness and safety.
Behavioral tools are important for good sleep and should be the first line of entry to improve sleep quality, before resorting to sleep supplements.