Valerian is an herbal extract. It is one of the leading natural supplements for managing anxiety and insomnia . But according to the Natural Medicines Comprehensive Data Base there is not enough proof to say that it is effective in treating insomnia. Some limited findings show that valerian may reduce the time needed to fall asleep and may improve sleep quality. Unlike the benzodiazepines, most people feel no morning grogginess after taking valerian. Other findings were not as promising. They showed that when compared to a placebo , valerian didn't relieve anxiety or insomnia any better than the placebo.
Complementary medicine ( CM ) or integrative medicine ( IM ) is when alternative medicine is used together with functional medical treatment, in a belief that it improves the effect of treatments. [n 7]     However, significant drug interactions caused by alternative therapies may instead negatively influence treatment, making treatments less effective, notably cancer therapy .   Both terms refer to use of alternative medical treatments alongside conventional medicine,    an example of which is use of acupuncture (sticking needles in the body to influence the flow of a supernatural energy), along with using science-based medicine, in the belief that the acupuncture increases the effectiveness or "complements" the science-based medicine.