What it means
GLP-1 medicines raise insulin mostly when blood sugar is high, so on their own they rarely cause low blood sugar. The risk goes up when they are combined with insulin or sulfonylureas such as glipizide or glyburide.
Labels note that the dose of insulin or a sulfonylurea may need to be lowered when starting a GLP-1. That decision belongs to your prescriber.
The common fix for a mild low is the 15-15 rule: about 15 grams of fast sugar, such as 4 ounces of juice, then recheck in 15 minutes. Severe lows need emergency care.
People without diabetes who are not on these medicines rarely have true hypoglycemia on a GLP-1. Shakiness from eating very little can feel similar but is usually a different problem.
Why it matters
People with diabetes on other glucose-lowering drugs need to know this risk before starting a GLP-1.
Related terms
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