Skip to content
GLP-1 Decoder

Zepbound While Breastfeeding: What the Human Milk Study Shows

The Zepbound label on breastfeeding: A small study found no measurable amount in breast milk, or only a low level.

Active ingredient
tirzepatide
How it is taken
weekly injection

Zepbound: quick facts

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

Its half-life is 5 to 6 days. After 5.5 d, half is gone, and after five half-lives (27.5 d), about 3% remains.

Weight loss in its main trial
SURMOUNT-1: 5 mg weekly15%SURMOUNT-1: 10 mg weekly19.5%SURMOUNT-1: 15 mg weekly20.9%Placebo3.1%

SURMOUNT-1 ran for 72 weeks and reported 20.9% for body weight, against 3.1% on placebo.

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

Monthly prices in US dollars include the list price and self-pay offers. Each comes from the maker's price page.

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

What the label covers for breastfeeding

Zepbound label: breastfeeding
MedicineWhat the label says
ZepboundA small study found no measurable amount in breast milk, or only a low level.

FDA labels provide the details: label information on DailyMed.

These warnings come from the label: DailyMed FDA label details.

Each GLP-1 label on breastfeeding

GLP-1 medicines and breastfeeding
MedicineWhat the label saysHow it is taken
ZepboundA small study found no measurable amount in breast milk, or only a low level.weekly injection
OzempicIt is not known whether this medicine enters human breast milk.weekly injection
WegovyBreast milk contains SNAC, and the tablets also contain it; for the injection, passage into breast milk is not known.weekly injection or daily tablet
RybelsusBreast milk contains SNAC, and the tablets also contain it.daily tablet
MounjaroA small study found no measurable amount in breast milk, or only a low level.weekly injection
FoundayoIt is not known whether this medicine enters human breast milk.daily tablet
TrulicityIt is not known whether this medicine enters human breast milk.weekly injection
SaxendaIt is not known whether this medicine enters human breast milk.daily injection
VictozaIt is not known whether this medicine enters human breast milk.daily injection
ByettaIt is not known whether this medicine enters human breast milk.twice-daily injection

Sources: FDA label on DailyMed.

Questions to ask your prescriber

See the full Zepbound prescribing information on DailyMed.