What is the most serious side effect of metformin?

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Lactic acidosis is the most serious side effect associated with Metformin Hcl 500 Mg use. Although rare, it can be life-threatening. Lactic acidosis occurs when there's an excessive buildup of lactic acid in the blood due to Metformin Hydrochloride 500 Mg impact on metabolism. Symptoms include rapid breathing, muscle pain, weakness, stomach pain, and feeling cold or dizzy. This condition is more likely to occur in individuals with kidney or liver problems, those with severe infections, or those undergoing certain medical procedures. It's crucial to seek immediate medical attention if these symptoms occur while taking metformin and to discuss potential risks with a healthcare provider before starting the medication.