The Valerian herb has been used to fight insomnia for centuries, and it is remains a trusted sleep aid today. Unlike other sleep aids it generally continues to be effective even after long term use. It's also safe enough to be used daily. Valerian herbs can vary widely in strength, but this supplement is standardized for reliable potency. Its extract is also used to treat symptoms of anxiety, which will only help you sleep easier. For more restful sleep without unwanted side effects common to other sleep aids, try Valerian standardized extract.