

Dexcom ONE+ Continuous Glucose Monitoring (CGM) System
- Share glucose data remotely with up to 10 trusted contacts
- Automatic readings sent 24/7 to your phone or optional receiver
- Waterproof design for daily activities
- Up to 10 days of wear, plus a 12-hour grace period
- Fast, discreet delivery
- 100% UK-based pharmacy
- Free advice and support
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Buy Dexcom ONE+ CGM System - Available Online
Dexcom ONE+ is Dexcom’s newest continuous glucose monitoring (CGM) system. It’s smaller, faster and easier to use than previous generations. Dexcom ONE+ helps people with type 1 or type 2 diabetes by providing real-time data throughout the day and night. The sensor automatically measures glucose just under the skin and sends readings straight to your smartphone or a separate handheld receiver, which can be purchased separately.
Who Is Dexcom ONE+ Continuous Glucose Monitoring (CGM) System Suitable For?
Dexcom ONE+ CGM System Information
What Is a Dexcom ONE+ CGM System?
Dexcom ONE+ is a continuous glucose monitoring system. It works by continuously measuring your glucose levels just under your skin, reducing the need for routine finger-prick testing. It automatically sends readings to a smartphone or receiver. This helps people with type 1 or type 2 diabetes track their glucose levels in real time and manage their condition.
How Does Dexcom ONE+ CGM System Work?
You wear a small sensor on your body, either on your arm or abdomen. This sensor continuously measures your glucose levels and wirelessly sends the readings to your phone app or another receiver. Alerts will notify you if your glucose levels fall outside your set range. It also includes a range of customisable alerts to make your notifications more relevant and tailored to your health.
Alternatives to Dexcom ONE+ CGM System
If the Dexcom ONE+ CGM is not suitable for you, there are other options.
These include:
- FreeStyle Libre 2 Plus
- FreeStyle Libre 3 Plus
If you’re unsure which option is right for you, our UK pharmacists are available to offer support.
What’s Included in the Box
Each Dexcom ONE+ CGM System pack includes the components needed to set up and use the sensor safely.
It doesn’t include a receiver as standard, so you’ll need to use a smartphone or purchase a separate optional receiver.
How To Use Dexcom ONE+ CGM System
To begin using Dexcom ONE+, download the Dexcom ONE+ app from the relevant store and create an account. Follow the in-app instructions to set up the system and pair your sensor using the code on the applicator. You need a secure internet connection to get set up.
Clean and dry the skin at the approved wear site, then use the applicator to insert the sensor just under the skin. Once inserted, return to the app to complete setup. The sensor will warm up before glucose readings and alerts begin.
Side Effects
Some people may experience side effects, which are typically mild and usually resolve within a week. They can include:
- Mild pain or discomfort when inserting the sensor
- Redness, itching, or irritation at the application site
- Skin reactions from the sticky patch
- Minor bleeding when you insert the sensor
- Infection at the insertion site, though this is rare
You may also rarely experience a skin reaction that lasts several weeks. Speak to your pharmacist if this happens to you.
Warnings
If your symptoms don’t align with the sensor's results, you should always confirm Dexcom ONE+ readings with a finger-prick test.
Apply the sensor only to the approved body sites listed in the instructions for use, and always read them carefully.
A medication called hydroxyurea can interfere with sensor readings and cause falsely high glucose values. Don’t use Dexcom ONE+ for treatment decisions if you’re taking hydroxyurea. Speak to your healthcare professional about alternative monitoring options.
You can take standard doses of paracetamol while using a CGM, but higher doses can impact sensor accuracy.
Dexcom ONE+ FAQs
How much does the Dexcom ONE+ cost in the UK?
Dexcom ONE+ may be available on the NHS for eligible patients. If you’re not eligible, you can buy the sensor yourself from an authorised UK supplier. Prices vary depending on where you purchase it.
Can you buy a Dexcom ONE+ over the counter?
You don’t need a prescription to obtain a Dexcom ONE+ sensor and can purchase it through a UK-based pharmacy such as The Independent Pharmacy.
What is the lifespan of a Dexcom ONE+ sensor?
Each Dexcom ONE+ sensor is designed for you to be able to wear it for 10 days. At the end of the 10 days, you have a 12-hour grace period in which to change the sensor, which provides extra flexibility.
How many Dexcom sensors are needed per month?
You’ll typically need three sensors per month to maintain continuous glucose monitoring. However, this can vary depending on individual wear patterns.
Is inserting a CGM sensor painful?
Using the automatic applicator is usually quick and may cause brief or mild discomfort. You’re most likely to experience a sensation of mild or brief discomfort, but once you’ve inserted the sensor, it should be comfortable to wear during your day-to-day activities.
What happens if you lie on your CGM sensor?
Lying down on your sensor can apply pressure to it, which could affect the readings it provides. This is only temporary, and the sensor functions normally when you stop lying on it.
How do you shower with a CGM sensor?
You can shower normally with a CGM sensor like Dexcom ONE+. It’s designed to be waterproof up to 2.4 metres, so as long as you’ve applied it correctly, you can shower, bathe and swim normally while wearing it. If it begins to detach from the skin, its water resistance will reduce, and it could damage the sensor.
Can you go through security with a Dexcom ONE+ sensor?
Yes, you should be fine going through airport or venue security while you have a CGM sensor on. However, you shouldn’t expose the sensor to X-ray or security scanners. You should ask for an alternative screening method, like a pat-down. If you’re taking spare CGM sensors with you, ask for them not to go through the security scanner either.
Will my CGM sensor set off a metal detector?
Continuous glucose monitoring sensors don’t usually trigger metal detectors. But if you’re concerned, it’s always worth letting security staff know you’re wearing one.
Related Treatments
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Visit our Diabetes (Type 2) page for treatments, advice and FAQs.
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