has role vitamin D vitamin D2 A vitamin D supplement and has been isolated from alfalfa. CHEBI:28934 antitubercular agent rodenticide antipsychotic agent analgesic cardiovascular drug antineoplastic agent immunosuppressive agent seco-ergostane bone density conservation agent nutraceutical insulin-sensitizing drug anti-HIV agent anti-asthmatic agent anti-inflammatory agent anti-obesity agent anti-anaemic agent plant metabolite