Present invention relates to the field of medicine, in particular, to adrology and is also useful in veterinary medicine for treating mammals having impaired fertility. The invention provides a fertility enhancing drug, wherein the drug is a clathrate complex of β-cyclodextrine with 9-phenyl-sym-octahydroselenoxanthene in α-crystalline form represented by structural formula. Technical effect provided by present invention consists in improvement of pregnancy and fertility parameters. 6 tables.
