has role is deprotonated form of has functional parent antiatherosclerotic agent anticoronaviral agent geroprotector biguanide antitubercular agent antidepressant anxiolytic drug antipsychotic agent analgesic antineoplastic agent anticonvulsant antihypertensive agent xenobiotic immunosuppressive agent leprostatic drug antirheumatic drug antimalarial anti-arrhythmia drug antiglaucoma drug antiparkinson drug antipsoriatic insulin-sensitizing drug biguanides anti-HIV agent anti-inflammatory agent metformin CHEBI:6801 A member of the class of guanidines that is biguanide the carrying two methyl substituents at position 1. anti-obesity agent anti-anaemic agent environmental contaminant metformin(1+)