Metabolic acidosis can result from.. Ingestion of certain medicines or chemicals e.g. metformin - glucophage

Metabolic acidosis can result from:

(a) Ingestion of certain medicines or chemicals e.g. metformin.(glucophage).
Metformin causes lactic acidosis.
Generally, metabolic acidosis is due to either addition of H+ (↑AG), ↓ excretion of H+ or loss of HCO3-