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GLP-1 Decoder

Zepbound and Insulin: Is It Safe? Label, Studies

Low blood sugar is more likely with insulin; your doctor may lower the insulin dose.

Verdict
Fine with care
Label says
Listed interaction

Check a GLP-1 interaction

Zepbound in brief

How long it remains in the body
100%50%25%0%05.5 d11 d16.5 d22 d27.5 d50%25%12.5%time after the dose

Half of the drug is gone after 5.5 d, with a half-life of 5 to 6 days. Five half-lives (27.5 d) leave about 3% behind.

Main trial weight loss
SURMOUNT-1: 5 mg weekly15%SURMOUNT-1: 10 mg weekly19.5%SURMOUNT-1: 15 mg weekly20.9%Placebo3.1%

In SURMOUNT-1, the body-weight figure after 72 weeks was 20.9%, compared with 3.1% on placebo.

Cost over time
202420252026$1,086.37$0List priceSelf-pay

The maker's price page provides monthly price points in US dollars for the list price and self-pay offers. Each figure comes from that page.

Sources: FDA label (DailyMed), Eli Lilly 1 2, cnbc.com.

Zepbound and insulin: the verdict

Fine with care

The Zepbound label's drug interactions section is quoted word for word:

“When initiating ZEPBOUND, consider reducing the dose of concomitantly administered insulin or insulin secretagogues (e.g., sulfonylureas) to reduce the risk of hypoglycemia [see Warnings and”

Source: the FDA label at DailyMed.

The label says

Insulin is the subject of these Zepbound label lines.

Drug interactions in the Zepbound label
Named in the labelThe riskWhat the label tells doctors
Insulin or sulfonylureasLow blood sugarWhen taken with insulin or a sulfonylurea such as glipizide or glimepiride, it raises the risk of low blood sugar. The doctor may lower those doses.

Source: the Zepbound label (DailyMed).

What the studies show

Source: the FDA label at DailyMed.

The practical rule

  1. If you start treatment or change doses, check your blood sugar more often. Know what the signs of low blood sugar look like.
  2. Check your blood sugar more often after every dose increase and through the first weeks.

Source: the FDA label at DailyMed.

Insulin with other GLP-1s

Each label's drug interaction section was checked for that same point.

Insulin across GLP-1 labels
MedicineInsulin in the labelVerdictPage
OzempicNamed in the labelFine with careRead the answer
WegovyNamed in the labelFine with careRead the answer
RybelsusNamed in the labelNot listedNot listed
MounjaroNamed in the labelFine with careRead the answer
ZepboundNamed in the labelFine with careNot listed
FoundayoNamed in the labelNot listedNot listed
TrulicityNamed in the labelFine with careRead the answer
SaxendaNamed in the labelNot listedNot listed
VictozaNamed in the labelFine with careRead the answer
ByettaNamed in the labelNot listedNot listed

Source: the FDA label at DailyMed.