Metformin can be safe for early-stage chronic kidney disease if monitored closely to mitigate the risk of lactic acidosis. Regular kidney function testing is essential.

Metformin is usually safe for use in early chronic kidney disease stages but requires careful monitoring of kidney function to prevent complications like lactic acidosis.

Patients with early-stage CKD can use Metformin under medical supervision to ensure their renal function does not deteriorate, which increases the risk of lactic acidosis.