To provide a pharmaceutical composition comprising a ceramide-related substance having little adverse side effects as an active ingredient by using a raw material that is highly safe to a human body and is inexpensive. A pharmaceutical composition comprising at least one sphingoglycolipid derivative that is produced from a beer waste and is represented by the formula below as an active ingredient: wherein R3 represents H or OH R4 is as defined by (a) or (b) (a) when R3 is H, R4 represents (CH2)13CH3 or (CH2)6CH═CHCH2CH═CH(CH2)4CH3 and (b) when R3 is OH, R4 represents (CH2)yCH3 (where Y represents an integer of 13 to 21) or (CH2)Z1CH═CH(CH2)Z2CH3 (where Z1 and Z2 independently represent 0 or a natural number, provided that Z1+Z2=19).
