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FreeStyle Libre 14 Day vs. Dexcom G7 15 Day

Head-to-head comparisons of medication uses, side effects, warnings, and more.

FreeStyle Libre 14 Day

 

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Dexcom G7 15 Day

 

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Summary for FreeStyle Libre 14 Day

Prescription only

FreeStyle Libre 14 Day is a continuous glucose monitoring (CGM) system that you wear on your skin. It's designed to replace fingersticks in adults with diabetes. It measures your glucose (sugar) levels every minute throughout the day to better help you keep track of your daily patterns. The FreeStyle Libre 14 Day system uses a 14-day sensor that's inserted in your skin. It sends your glucose readings directly to your smartphone (through an app) or the FreeStyle Libre 14 Day handheld reader.

Indications for FreeStyle Libre 14 Day

  • Monitor glucose levels

Pros and Cons for FreeStyle Libre 14 Day

Pros

  • Sensor lasts up to 14 days
  • No separate transmitter needed, unlike some other CGMs
  • FreeStyle Libre 14 Day Reader comes with a built-in blood glucose meter

Cons

  • Only for adults
  • Must wait 60 minutes after placing a new sensor to check glucose
  • Sensor can only be placed on the back of the upper arm

Warnings for FreeStyle Libre 14 Day

  • Warning for medical tests and imaging
  • Warning for security machines
  • Low or high blood sugar
  • No alarms
  • Dehydration (low fluids in the body)
  • Risk of substances causing false blood sugar readings
  • Skin irritation
  • Don't reuse sensors

Summary for Dexcom G7 15 Day

Prescription only

Dexcom G7 15 Day is a continuous glucose monitoring (CGM) system used to help manage adults with diabetes by tracking glucose levels in real time without fingersticks. It uses a small sensor you wear on your skin to alert you when your blood sugar is too high or too low. The readings are then sent to a receiver, like your smartphone or a compatible insulin pump. Each sensor lasts up to 15 days before it needs to be replaced. Possible side effects include skin irritation or swelling at the application site.

Indications for Dexcom G7 15 Day

Pros and Cons for Dexcom G7 15 Day

Pros

  • Each sensor lasts up to 15 days
  • Able to pair with compatible insulin pumps
  • Sensor and transmitter comes pre-assembled
  • Have 12-hours to replace sensor after it expires

Cons

  • Can only be used by adults, not FDA cleared for children
  • Sensors take 60 minutes to warm up
  • Glucose readings might not be accurate if you're receiving dialysis
  • Smartphone or G7 receiver must be within 33 feet of sensor; smartwatch must be within 20 feet of sensor

Common Side Effects for Dexcom G7 15 Day

  • Infection at the application site
  • Pain or discomfort at the application site
  • Skin irritation or swelling at the application site

Warnings for Dexcom G7 15 Day

  • Warning for medical tests and imaging
  • Warning for security machines
  • Avoid skin care or other topical products
  • Low or high glucose levels
  • Risk of medications causing false glucose readings

Prices with our coupons for FreeStyle Libre 14 Day vs. Dexcom G7 15 Day

Price Card Drug Icon
FreeStyle Libre1 box / 1 glucose meter of 10 day flash glucose monitoring system reader
--
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Price Card Drug Icon
Dexcom G7 15 Day1 carton / 2 sensors
$174.05$516.24
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