botanial name: schsandga chinensis baill english name: fructus schisandrae chinensis [origin habitat ]: liaoning [chemical composition ]: the fruits has volatile oil conclude citral , α-ylangene , α-chamigrene , β-chamigerene , chamigrenal .it also has citrate , tartrate , arginine . many kinds of lignans : schizandrin , schizandrina , deoxyschizandrin , schizandrola,b , schizadrinc , gomisins c , gomisin b , gomisind,e ,f,g, aneloygomisinh , tigloygomisinh , benzoylgomisinh , gomisij , gomisin k1 , (+1)-gomisin k2 , gomisink3,n,o, trigloylgomisinp , epigomisin , pregomisin . [p harmacological action ]: 1. to improve intelligence actieities . 2. to improve y for work . 3.to be used to treat neurasthenia . 4. to treat hepatitis . 5.be antitussive and expectoraut . 6.to play a strong role .