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GLP-1 Decoder

Mounjaro for Breastfeeding: Evidence, Eligibility, Coverage

The Mounjaro label on breastfeeding: In a small study, levels in breast milk were undetectable or low.

Active ingredient
tirzepatide
How it is taken
weekly injection

Mounjaro overview

How long the drug stays in your body
100%50%25%0%05 d10 d15 d20 d25 d50%25%12.5%time after the dose

Its half-life is about 5 days, so after 5 d half is gone, and after five half-lives, which is 25 d, about 3% is left.

Weight loss in its main trial
Mounjaro (SURPASS-1)7.8 kgPlacebo1 kg

In SURPASS-1, people with type 2 diabetes lost 7.8 kg over 40 weeks, compared with 1 kg on placebo.

Prices as time goes on
2026$1,112.16$0List priceSelf-pay

In US dollars, the monthly figures come from the maker's price page: they cover list price and self-pay offers.

Sources: FDA label (DailyMed), healthsystemtracker.org, pricinginfo.lilly.com.

What the label says on breastfeeding

Mounjaro label: breastfeeding
MedicineWhat the label says
MounjaroIn a small study, levels in breast milk were undetectable or low.

DailyMed FDA label.

Label warnings come from the FDA label at DailyMed.

Each GLP-1 label on breastfeeding

GLP-1 medicines and breastfeeding
MedicineWhat the label saysHow it is taken
MounjaroIn a small study, levels in breast milk were undetectable or low.weekly injection
OzempicIt is not known if the medicine passes into human breast milk.weekly injection
WegovyThe tablets contain SNAC, which is also found in breast milk; for the injection, passage into breast milk is not known.weekly injection or daily tablet
RybelsusThe tablets contain SNAC, which is also found in breast milk.daily tablet
ZepboundIn a small study, levels in breast milk were undetectable or low.weekly injection
FoundayoIt is not known if the medicine passes into human breast milk.daily tablet
TrulicityIt is not known if the medicine passes into human breast milk.weekly injection
SaxendaIt is not known if the medicine passes into human breast milk.daily injection
VictozaIt is not known if the medicine passes into human breast milk.daily injection
ByettaIt is not known if the medicine passes into human breast milk.twice-daily injection

FDA label on DailyMed

Questions to ask your prescriber

For the full prescribing information for Mounjaro, see DailyMed: Mounjaro label.