Dexcom Stelo is the first over-the-counter continuous glucose monitor (CGM) cleared by the FDA for adults who do not use insulin. Launched in 2024, it is a simplified version of the Dexcom G7 aimed at people with type 2 diabetes not on insulin, prediabetes, and health-conscious consumers who want to see how their lifestyle affects blood sugar. Each sensor lasts 15 days.
What Is Dexcom Stelo?
Stelo is a small adhesive sensor worn on the upper arm that measures your glucose every 15 minutes and streams the data to the Stelo smartphone app. Unlike the prescription Dexcom G7, Stelo is sold over the counter and does not include alerts for severe lows — since it is not intended for people who dose insulin.
According to the FDA announcement in March 2024, Stelo was the first CGM cleared for OTC sale, opening continuous glucose monitoring to millions of Americans who previously could not access it.
Who Is Stelo For?
Stelo is designed for three main user groups:
- Type 2 diabetes not on insulin: People managing diabetes with diet, exercise, or oral medications (like metformin)
- Prediabetes: Adults with A1C between 5.7-6.4% who want to see meal and lifestyle impacts in real time
- Wellness users: Health-focused adults tracking glucose trends alongside fitness, sleep, and diet
Stelo is not for people with type 1 diabetes, people on insulin, pregnant women, or anyone with a history of severe hypoglycemia. Those users should stick with the prescription Dexcom G7.
Stelo vs. Prescription CGMs
| Feature | Dexcom Stelo | Dexcom G7 | Abbott Lingo |
|---|---|---|---|
| Prescription needed? | No | Yes | No |
| Wear time | 15 days | 10.5 days | 14 days |
| Reading interval | Every 15 minutes | Every 5 minutes | Every 1 minute |
| Low-glucose alerts | No | Yes | No |
| Insurance coverage | Typically no (HSA/FSA eligible) | Yes | No |
| Approved for insulin users | No | Yes | No |
| Price per month | ~$99 subscription | $120-180 per sensor (3/month) | ~$89 |
How Accurate Is Stelo?
Stelo uses the same underlying sensor chemistry as the Dexcom G7, with published MARD (mean absolute relative difference) in the 10% range for non-insulin users. That is clinically accurate for trend monitoring, meal-response tracking, and general wellness insight. It is not intended for urgent treatment decisions, and users are cautioned against using Stelo to drive medication changes without a doctor’s guidance.
What You Can Learn From Stelo
Stelo is most useful for identifying patterns. Common insights include:
- Which specific meals cause the biggest glucose spikes
- How a 10-minute walk after meals lowers post-meal glucose
- The glucose effect of poor sleep, stress, or alcohol
- How morning glucose varies day to day (dawn phenomenon)
- Whether your current diet and nutrition plan is improving blood sugar stability
Many prediabetes users report changing their eating habits within the first few weeks of wearing a CGM once they see the direct impact of specific foods.
How to Use Stelo
- Order the sensor online at Stelo.com or buy at a participating pharmacy (no prescription needed).
- Download the Stelo app on iPhone or Android and create an account.
- Apply the sensor to the back of your upper arm with the included applicator.
- Pair it with the app and wait 30 minutes for warm-up.
- Review real-time readings, trend arrows, and daily summaries. Export data as PDF to share with your doctor.
Remove and replace after 15 days. Rotate sites to avoid irritation.
Limitations to Know
Stelo is designed for pattern insight, not emergencies. It lacks predictive low alerts, cannot be used for insulin dosing, and does not integrate with insulin pumps. Acetaminophen, severe dehydration, and extreme temperatures can temporarily affect readings. If your CGM data does not match how you feel, fingerstick with a glucose meter to confirm.
Should You Use Stelo?
If you have prediabetes or type 2 diabetes not on insulin and want actionable data to guide lifestyle change, Stelo is worth considering. Seeing meal-by-meal glucose responses can accelerate progress toward reversing prediabetes. If you have type 1 diabetes or take insulin, stick with a prescription CGM designed for treatment decisions.
The Bottom Line
Dexcom Stelo is the first over-the-counter continuous glucose monitor in the United States, designed for adults 18 and older with type 2 diabetes not on insulin, prediabetes, or general wellness goals. Each sensor lasts 15 days, costs about $89-99, and delivers glucose readings every 15 minutes through a smartphone app. It is not a replacement for a prescription CGM if you take insulin, but it is a powerful tool for understanding how food, exercise, and sleep affect your blood sugar. Talk with your doctor before making medication changes based on Stelo data.
