Take metformin exactly as prescribed by your doctor
Take it with meals to reduce stomach upset
Swallow extended-release tablets whole
Do not crush, chew, or split extended-release tablets
Take it at the same time each day
If you miss a dose, take it when you remember unless it is almost time for the next dose
Do not take two doses at the same time
Follow any dose increases or decreases directed by your doctor
Keep taking it even if you feel well unless your doctor tells you to stop
Check your blood sugar as directed
Tell your doctor if you have vomiting, diarrhea, dehydration, or kidney problems
Avoid alcohol or limit it as directed by your doctor
Carry out any lab tests your doctor orders
Ask your pharmacist if you are unsure whether your tablet is immediate-release or extended-release