Lactic acidosis is common with:
Metformin
Phenformin
Repaglinide
Rosiglitazone
Small increase in blood lactate occurs with metformin but lactic acidosis is rare because it is poorly concentrated in hepatic cells. phenformin has been withdrawn from the market due to risk of lactic acidosis (REF.Essential of medical pharmacology K D TRIPATHI 6 Edition, Page No - 269)
Endocrinology