Valerian (herb) Valerian (herb) Valerian ("Valeriana officinalis", Caprifoliaceae) is a perennial flowering plant native to Europe and Asia. In the summer when the mature plant may have a height of , it bears sweetly scented pink or white flowers that attract many fly species, especially hoverflies of the genus "Eristalis". It is consumed as food by the larvae of some Lepidoptera (butterfly and moth) species, including the grey pug. Crude extract of valerian root may have sedative and anxiolytic effects, and is commonly sold in dietary supplement capsules to promote sleep. Valerian has been used as a medicinal herb since at least
Alternative treatments used for the common cold Alternative treatments used for the common cold Alternative treatments used for the common cold include numerous home remedies and alternative medicines. Scientific research regarding the efficacy of each treatment is generally nonexistent or inconclusive. Current best evidence indicates prevention, including hand washing and neatness, and management of symptoms. Many believe that cold temperature can cause and therefore prevention of exposure to cold temperature can prevent the common cold. Evidence does not support this association. Vitamin C was identified in the early part of the previous century and there was much interest in its possible effects on various infections including the