Metformin Warnings and Precautions Explained

Metformin hcl 500 mg is a widely prescribed medication for managing type 2 diabetes, but like all medicines, it comes with important warnings and precautions. One of the most serious, though rare, risks is lactic acidosis, a condition caused by a buildup of lactic acid in the blood. This risk is higher in people with kidney disease, liver problems, severe infections, dehydration, or heavy alcohol use. For this reason, doctors usually check kidney function before starting metformin and monitor it regularly during treatment.

Metformin should be used cautiously in older adults and may need to be stopped temporarily before surgery or imaging tests involving contrast dye, as these can affect kidney function. Excessive alcohol intake should be avoided because it increases the risk of low blood sugar and lactic acidosis. Some people may experience vitamin B12 deficiency with long-term use, so periodic monitoring may be recommended.

Pregnant or breastfeeding women should take metformin only under medical supervision. Always follow your doctor’s dosage instructions and report symptoms like extreme fatigue, muscle pain, breathing difficulty, or stomach discomfort. Using metformin safely means understanding these precautions and maintaining regular medical follow-ups.

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