Readings on newer CGMs don't seem to be affected by standard doses of acetaminophen (up to 1,000 milligrams for an adult). Check your device's user's guide to learn if you need to check, and if so, how often you need to do it.Ĭertain medications, such as acetaminophen (Tylenol, others), albuterol (Proair HFA, Ventolin HFA, others) and lisinopril (Prinivil, Zestril, Qbrelis), may interfere with the accuracy of some CGM readings, particularly on older models of CGMs. Most of these devices still require finger-stick checks to calibrate the machine. Others require that you check your blood sugar by running the receiver over the sensor periodically. Some devices show your blood sugar reading at all times on a receiver, smartphone or smartwatch, and an alarm goes off if your blood sugar is going up or down too quickly. A transmitter worn on the body sends blood sugar information wirelessly from the sensor to a smartphone app. The newest type of continuous glucose monitor has an implanted sensor that can detect blood sugar levels for up to three months.
