Automatic glucose levels at a glance

Image shown does not include required overpatch. Please be sure to follow instructions for using the overpatch. Compatible smart device sold separately
Keeping a close eye on your glucose levels is crucial in managing your type 1 or type 2 diabetes. But this can feel like a never-ending numbers game that requires constant finger pricking and a lot of guesswork.
Dexcom Continuous Glucose Monitoring (CGM) Systems track your glucose levels automatically without finger pricks*. So, with a glance at your receiver or compatible smartphone, you can view your numbers anytime and anywhere, helping you to take control of your diabetes.

What is CGM?

Continuous glucose monitoring (CGM) tracks your glucose levels 24 hours a day (throughout the day and night). Predictive alerts§ let you know if your levels are going to go too high or too low, reducing the risk of hyper- and hypoglycaemia.1
Instead of painful finger pricks*, a sensor measures glucose levels in your interstitial fluid every 5 minutes. It translates the readings into easy-to-read data and insights. Not only can you see your numbers in real-time, but it can also show the direction your glucose is heading and how fast. So, you can make preventative diabetes treatment decisions.

Why choose CGM?

Blood Glucose Monitoring (BGM) only gives you a snapshot of your blood sugar levels at a single moment in time.
Dexcom CGM takes up to 288 automatic readings every 24 hours. This turns static glucose readings into an ever-updating story. The effects of exercise, food and medicine can be seen in real-time on a receiver or compatible smartphone†, helping you to stay in your target glucose range.
Blood Glucose Monitoring
  • Finger pricks are painful
  • No overnight readings without waking up to finger prick
  • Patients can only rely on symptoms of high/low glucose, if they have any
  • Finger pricks only give you a snapshot in time of your blood sugar levels
    Flash Glucose Monitoring
    • Scanning may not give a 24-hour picture for treatment decisions - no overnight readings without waking up to scan
    • In a recent study of patients using FGM, even those who scanned on average 40 times per day were generally still not meeting recommendations for time spent in target glucose range2,3
    • The clinical benefits of scanning decrease over time in young people4,5
    The Dexcom difference
    By not having to finger prick* or scan, Dexcom CGM provides continuous and accurate‡ glucose management, giving you the freedom to live your life.

    Who is CGM for?

    CGM is a powerful tool for people living with type 1 diabetes (T1D) or type 2 diabetes (T2D), including pregnant women with diabetes. 6-9
    According to the National Institute for Health and Care Excellence (NICE) guidelines, anyone with T1D should have access to CGM, as well as some people with T2D, such as children and those who use insulin therapy.10-13
    Did you know that you could qualify for NHS funding for Dexcom CGM Systems?
    Why choose Dexcom CGM Systems?
    Dexcom CGM Systems provide proven accuracy - even when glucose levels are rising or falling, allowing you to make better informed treatment decisions. Dexcom CGM use is shown to lower HbA1C, reduce hyper- and hypoglycaemia, increase time in range1,6-8 and improve quality of life.14-16
    How does Dexcom work?
    Instead of looking at one glucose number at a single moment in time, Dexcom tracks your glucose levels day and night. Here's how it works:

    1. Easy, painless application18

    You insert a slim sensor wire just beneath your skin using an automatic applicator. An adhesive patch holds the sensor in place so it can measure glucose readings in your interstitial fluid 24/7.

    2. Small, discreet wearable

    A small transmitter connects to the sensor wire and sends automatic readings to a receiver or compatible smartphone† so you can view your numbers without finger pricks.*

    3. Real-time numbers & alerts

    The receiver or compatible smartphone† displays your current glucose levels, as well as historical trends. Set customisable alerts that can warn you of highs and lows (before they happen).

    Take control of your diabetes with CGM

    Want to Experience the benefits of CGM for yourself? Compare our products to see which Dexcom CGM System is right for you.
    Image shown does not require overpatch. Please be sure to follow instrcutions for using the overpatch
    • Contact customer support
    *If your glucose alerts and readings from Dexcom CGM systems do not match symptoms or expectations, use a blood glucose meter to make diabetes treatment decisions.
    † For a list of compatible smart devices, please visit
    ‡ Dexcom G6, Dexcom G7, and Dexcom ONE+
    User Guides.
    § Alerts are not the same for all Dexcom products. Compare alerts here:¶ Internet connectivity required for data sharing. Following requires the use of the Dexcom Follow App on a compatible smart device. Followers should always confirm readings on the Dexcom CGM App or receiver before making treatment decisions.
    || Discuss with your HCP on how to use CGM information to manage diabetes.
    # Compared to prior generation Dexcom CGM Systems.
    ** Dexcom G6 (children only 2-17 years). Dexcom G7 and Dexcom ONE+ (children only 2-6 years).
    1 Puhr S, et al. Real-world hypoglycemia avoidance with a continuous glucose monitoring system’s predictive low glucose alert. Diabetes Technol Ther. 2019;21(4):155-158.
    2 Lameijer A, et al. Flash Glucose Monitoring in the Netherlands: Increased monitoring frequency is associated with improvement of glycemic parameters. Diabetes Res Clin Pract. 2021;177:108897.
    3 Battelino T, et al. Clinical Targets for Continuous Glucose Monitoring Data Interpretation: Recommendations From the International Consensus on Time in Range. Diabetes Care. 2019;42(8):1593-1603.
    4 Evans M, et al. Reductions in HbA1c with Flash Glucose Monitoring Are Sustained for up to 24 Months: A Meta-Analysis of 75 Real-World Observational Studies. Diabetes Care. 2021;44(1):1175-1185.
    5 Rose S, et al. Use of intermittently scanned continuous glucose monitoring in young people with high-risk type 1 diabetes-Extension phase outcomes following a 6-month randomized control trial. Diabet Med. 2021;39(5):e14756.
    6 Lind M, et al. Sustained Intensive Treatment and Long-term Effects on HbA1c Reduction (SILVER Study) by CGM in People With Type 1 Diabetes Treated With MDI. Diabetes Care. 2021;44(1):141-149.
    7 Martens T, et al. Effect of continuous glucose monitoring on glycemic control in patients with type 2 diabetes treated with basal insulin: A randomized clinical trial. JAMA. 2021;325(22):2262-2272.
    8 Beck RW, et al. Continuous glucose monitoring versus usual care in patients with type 2 diabetes receiving multiple daily insulin injections: A randomized trial. Ann Intern Med. 2017;167(6):365-374.
    9 Murphy et al. Characteristics and outcomes of pregnant women with type 1 or type 2 diabetes: a 5-year national population-based cohort study. Lancet Diabetes Endocrinol. 2021;9(3):153-164.
    10 Diabetes (type 1 and type 2) in children and young people: diagnosis and management. NICE guideline [NG18]. Updated May 11, 2023.
    11 Type 1 diabetes in adults: diagnosis and management: Recommendations. NICE guideline [NG17]. Updated August 17, 2022. Type 2 diabetes in adults: management: Recommendations. NICE guideline [NG28]. Updated June 29, 2022. 13 Diabetes in pregnancy: management from preconception to the postnatal period: Recommendations. NICE guideline [NG3]. Updated December 16, 2020. 14 Polonsky WH, Fortmann AL. Impact of Real-Time Continuous Glucose Monitoring Data Sharing on Quality of Life and Health Outcomes in Adults with Type 1 Diabetes. Diabetes Technol Ther. 2021;23(3):195-202.
    15 Lind M, et al. Continuous Glucose Monitoring vs Conventional Therapy for Glycemic Control in Adults With Type 1 Diabetes Treated With Multiple Daily Insulin Injections: The GOLD Randomized Clinical Trial. JAMA. 2017;317(4):379-387.
    16 Gilbert TR, et al. Change in hemoglobin A1c and quality of life with real-time continuous glucose monitoring use by people with insulin-treated diabetes in the Landmark study. Diabetes Technol Ther. 2021;23(S1):S35-S39.
    17 Dexcom, data on file, 2020.
    18 Shah VN, et al. Performance of a factory-calibrated real-time continuous glucose monitoring system utilizing an automated sensor applicator. Diabetes Technol Ther. 2018;20(6):428-433.

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