Interfering substances and risks

The following medications are known to interfere with the Dexcom G6 and G7 CGM sensors. Learn about the impact on sensor readings and recommendations.

Hydroxyurea is a medication used in the treatment of diseases including cancer and blood disorders; it is known to interfere with sensor readings.
Impact: If you are taking hydroxyurea, your sensor readings will be higher than your actual glucose, which could result in missed hypoglycemia alerts or errors in diabetes management, such as giving yourself a higher dose of insulin due to falsely high sensor glucose values. The level of inaccuracy depends on the amount of hydroxyurea in your body.
Recommendation: Don't use your G7 System for diabetes treatment decisions if you are taking hydroxyurea. Talk to your physician about alternative glucose monitoring approaches.
Impact: Taking higher than the maximum dose of acetaminophen (e.g. > 1 gram every 6 hours in adults) may affect the sensor readings and make them look higher than they really are.
Recommendation: The Dexcom G6 and G7 CGM Systems, you can take a standard or maximum acetaminophen dose of 1 gram (1,000 mg) every 6 hours and still use the sensor readings to make treatment decisions.
In previous generations of Dexcom CGM systems (G4/G5), acetaminophen could affect your sensor readings, making them look higher than they really were. There are no reports of Ibuprofen interference with Dexcom CGM.
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