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GLP-1 Decoder

GLP-1 for Prediabetes: Evidence, Eligibility, Coverage

No GLP-1 label lists prediabetes as an approved use; doctors may still prescribe one when a listed use, such as weight loss, also applies. In SURMOUNT-1, people on Zepbound lost 20.9% of body weight on average, vs 3.1% on placebo.

Best result (SURMOUNT-1)
20.9% weight loss

Weight loss and half-life, side by side

How long each one remains in the body
Wegovy7 dOzempic7 dRybelsus7 dZepbound5.5 dMounjaro5 dTrulicity5 dFoundayo1.6 dSaxenda0.5 dVictoza0.5 dByetta0.1 d

Half-life in days tells you how long your body needs to clear half of one dose. The FDA label for each drug gives the figure in section 12.3.

How much weight was lost in the main weight trial of each medicine
Zepbound20.9%Wegovy14.9%Foundayo11.1%Saxenda7.4%

A percentage of body weight. Trials differ, as do doses and lengths, so read each result against the placebo on its page.

Sources (10)

From the FDA label (DailyMed): 1 2 3 4 5 6 7 8 9 10.

Is GLP-1 approved for prediabetes?

GLP-1 medicines and prediabetes
MedicineFor prediabetesHow it is takenTrial result
OzempicNot a listed useweekly injectionNot listed
WegovyNot a listed useweekly injection or daily tablet14.9% weight loss
RybelsusNot a listed usedaily tabletNot listed
MounjaroNot a listed useweekly injectionNot listed
ZepboundNot a listed useweekly injection20.9% weight loss
FoundayoNot a listed usedaily tablet11.1% weight loss
TrulicityNot a listed useweekly injectionNot listed
SaxendaNot a listed usedaily injection7.4% weight loss
VictozaNot a listed usedaily injectionNot listed
ByettaNot a listed usetwice-daily injectionNot listed

Sources: FDA label (DailyMed).

Who qualifies?

GLP-1: who qualifies
Who sets the ruleWho qualifies
OzempicWhen used with diet and exercise, it lowers blood sugar in adults with type 2 diabetes.
OzempicFor adults with type 2 diabetes and heart disease, the chance of heart attack, stroke or heart-related death is lower.
OzempicAdults who have chronic kidney disease and type 2 diabetes see less chance that the kidney disease gets worse, and less chance of kidney failure and heart-related death.
WegovyFor adults with heart disease plus obesity or overweight, the risk of heart attack, stroke, or death related to the heart is lower (injection and tablets).
WegovyLong-term weight loss and keeping it off, through diet and activity, applies to two groups. These are people who have obesity, whether they are adults or children 12 and older, and adults who are overweight and have a weight-related condition.
WegovyIt is a treatment (injection) for adults whose MASH liver disease has moderate to advanced scarring and no cirrhosis.
WegovyThe tablet form is approved for adults for weight loss and heart risk.
RybelsusWhen used with diet and exercise, it lowers blood sugar in adults with type 2 diabetes.
RybelsusWhen adults with type 2 diabetes are at high risk, they face less risk of heart attack, stroke or heart-related death.
MounjaroUsed with diet and exercise, it lowers blood sugar in adults and children 10 and older with type 2 diabetes.
MounjaroWhen adults with type 2 diabetes are at high risk, they face less risk of heart attack, stroke or heart-related death.
ZepboundThrough diet and activity, long-term weight loss and keeping it off applies to adults who have obesity, and also to adults who are overweight and have a weight-related condition.
ZepboundIt treats adults with obesity and moderate to severe obstructive sleep apnea.
FoundayoThrough diet and activity, long-term weight loss and keeping it off applies to adults who have obesity, and also to adults who are overweight and have a weight-related condition.
TrulicityUsed with diet and exercise, it lowers blood sugar in adults and children 10 and older with type 2 diabetes.
TrulicityFor adults with type 2 diabetes and heart disease, the chance of heart attack, stroke or heart-related death is lower or several heart risk factors.
SaxendaIt is for long-term weight loss and keeping it off, with diet and activity. It covers children 12 and older (over 60 kg) and adults who have obesity, plus adults who are overweight and have a weight-related condition.
VictozaUsed with diet and exercise, it lowers blood sugar in adults and children 10 and older with type 2 diabetes.
VictozaFor adults with type 2 diabetes and heart disease, the chance of heart attack, stroke or heart-related death is lower.
ByettaWhen used with diet and exercise, it lowers blood sugar in adults with type 2 diabetes.
Medicare GLP-1 BridgeBMI 35 or higher, no condition needed
Medicare GLP-1 BridgeCoverage needs a BMI of 30 or above, plus heart failure, uncontrolled blood pressure, or CKD 3a+
Medicare GLP-1 BridgeA BMI of 27 or above, plus PAD, prediabetes, or a previous heart attack or stroke
Typical commercial plan (Aetna policy)BMI 30 or higher
Typical commercial plan (Aetna policy)BMI 27 or higher with a weight-related condition
Typical commercial plan (Aetna policy)first, on a diet and activity program for 6 months
Sources (13)

From the medicare.gov 1 2, aetna.com, plus FDA label (DailyMed), with items 1 2 3 4 5 6 7 8 9 10.

Trial results in prediabetes

None of these trials enrolled only prediabetes; the people studied were adults with obesity or overweight, without diabetes, adults with obesity or overweight, and no type 2 diabetes and adults with obesity, without type 2 diabetes.

GLP-1 trials in prediabetes
TrialMedicineWho took partLengthPeopleMain resultComparison
STEP 1 WegovyAdults with obesity or overweight, without diabetes68 weeks1,96114.9% weight loss2.4% on placebo
OASIS 4 WegovyAdults with obesity or overweight, without diabetes64 weeks30713.6% weight loss2.4% on placebo
SURMOUNT-1 ZepboundAdults with obesity or overweight, without diabetes72 weeks2,53920.9% weight loss3.1% on placebo
SURMOUNT-5 ZepboundAdults with obesity, without type 2 diabetes72 weeks75120.2% weight lossNot listed
SCALE Obesity and Prediabetes SaxendaAdults with obesity or overweight, and no type 2 diabetes56 weeks3,7317.4% weight loss3% on placebo
ATTAIN-1 FoundayoAdults with obesity or overweight, without diabetes72 weeks3,12711.1% weight loss2.1% on placebo

Trial sources: STEP 1 (FDA label (DailyMed)), SURMOUNT-1 (FDA label (DailyMed)), SURMOUNT-5 (PubMed), SCALE Obesity and Prediabetes (FDA label (DailyMed)), ATTAIN-1 (FDA label (DailyMed)).

What is different when you have prediabetes?

GLP-1: label points for prediabetes
What changesWhat the label saysLabels
Hypoglycemia When Using Insulin Secretagogues or Insulin at the Same TimeLow blood sugar is more likely when you take it with insulin or a sulfonylurea, so those doses may need to be lowered.All of them
Taken with insulin or sulfonylureasWhen you combine this medicine with insulin or a sulfonylurea, such as glipizide or glimepiride, low blood sugar is more likely. Your doctor may lower those doses.All of them

Taken from the FDA labels: FDA DailyMed label.

These come from the label warnings: FDA label (DailyMed).

Coverage for prediabetes

Medicare Part D does not pay for a GLP-1 when you take it only for weight loss.

The Medicare GLP-1 Bridge puts Wegovy at $50 a month for people who meet its rules.

Where Medicaid pays for weight-loss GLP-1s, prior authorization is the norm.

These sources come from humana.com, CMS, KFF.

Questions to ask your prescriber