Metformin is considered the most popular anti-diabetic drug. Before using metformin you should inform you doctor about medical conditions such as congestive heart failure, liver or kidney disease. You should also inform your doctor about any other medication that you may be taking before taking metformin. This is important because certain people have developed potentially dangerous condition called lactic acidosis while taking metformin. You can find extensive information on metformin over the internet. You should always take this medication only in consultation with your doctor or pharmacist.

This drug like any other drug has certain side effects that can differ from individual to individual. Some of the common side effects of metformin include fainting, irregular heartbeat, stomach pain, diarrhea, and muscle aches, difficulty in breathing and dizziness. You should also avoid metformin if you were to be allergic to any of its components. In case of serious side effects you should immediately stop taking this medication and seek medical attention.