What to do if you miss a metformin dose
Take the missed dose as soon as you remember, unless it's almost time for your next dose. Skip it if it's close to the next one—don't double up to avoid low blood sugar or stomach upset. Regular dosing keeps blood sugar steady for type 2 diabetes control.
How does missing one dose affect blood sugar?
A single missed dose usually causes a small, temporary rise in blood sugar, especially if your levels are stable. Effects vary by your dose, diet, activity, and how well-controlled your diabetes is. Monitor with a glucometer if possible.
What if you miss multiple doses?
Blood sugar can rise more noticeably, increasing risks like hyperglycemia symptoms (thirst, frequent urination, fatigue). Resume normally but check with your doctor—they might adjust your plan or test levels.
When to call your doctor
Contact them if blood sugar stays high (>250 mg/dL), you have symptoms of high sugar, or you've missed several doses. Also call for severe side effects like nausea or lactic acidosis signs (muscle pain, breathing trouble), though rare from missing doses alone.
Tips to avoid missing doses
Set phone alarms, use pill organizers, or link doses to meals (metformin is often twice daily with food). Apps like Medisafe track adherence. Consistency matters more than perfection for long-term A1C control.