Diabetes Medications: Metformin, Insulin & GLP-1 Drugs
Metformin: the usual starting point
It does not cause hypoglycemia alone — but illness changes the rules.
Metformin is first-line for type 2 diabetes because it lowers glucose without weight gain and may protect the heart. GI upset often fades after a few weeks. During vomiting, severe dehydration, or before iodinated contrast scans, many clinicians say to pause temporarily to avoid a rare buildup called lactic acidosis.
GLP-1 drugs and insulin together
Semaglutide, tirzepatide, and similar medicines help glucose and weight but slow how fast food empties from the stomach. Adding insulin raises hypoglycemia risk — doses are often reduced when both are used. Never adjust insulin on your own because appetite dropped.
Recognizing low blood sugar
Shakiness, sweating, irritability, and confusion can appear quickly if you skip a meal on insulin or a sulfonylurea. Carry fast-acting glucose (tabs, juice). Family should know how to help if you become confused or unresponsive.
Treat low blood sugar or seek help if
- Glucose below 70 mg/dL with symptoms — use 15 g fast carbs, recheck in 15 minutes
- Person is unconscious or cannot swallow — call 911; glucagon if available
- Repeated lows without clear cause — contact your diabetes team
Medical disclaimer
This article is for general educational purposes only. It is not medical advice, diagnosis, or treatment. Individual responses to medications vary. Always talk to your doctor, pharmacist, or qualified healthcare provider before starting, stopping, or changing any medication — especially if you are pregnant, trying to conceive, or breastfeeding.
This site is built and maintained with AI-generated content. Verify important health decisions with a qualified clinician.
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