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GLP-1 Decoder

Mounjaro and Antidepressants: Is It Safe? Label, Studies

No antidepressant interaction is listed; ask your pharmacist about your specific medicine.

Verdict
Ask your prescriber first
Label names it
No
General caution
Pills absorbed more slowly

Check a GLP-1 interaction

Mounjaro in brief

How long it 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. After 5 d, half is gone; about 3% remains after five half-lives (25 d).

Main trial: how much weight was lost
Mounjaro (SURPASS-1)7.8 kgPlacebo1 kg

In the SURPASS-1 trial of 40 weeks in type 2 diabetes, people lost 7.8 kg, compared with 1 kg on placebo.

What it costs over time
2026$1,112.16$0List priceSelf-pay

The maker's price page lists monthly price points in US dollars, including list prices and self-pay offers.

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

Mounjaro and antidepressants: the verdict

Ask your prescriber first

Quoted word for word from the Mounjaro label, drug interactions section:

“MOUNJARO delays gastric emptying and thereby has the potential to impact the absorption of concomitantly administered oral medications. Caution should be exercised when oral medications”

Source: the FDA label (DailyMed).

What the Mounjaro label tells you

The Mounjaro label does not name antidepressants. Those lines still apply to Mounjaro.

Drug interactions the Mounjaro label lists
Named in the labelThe riskWhat the label tells doctors
Oral medicinesPills absorbed differentlyIt slows the emptying of your stomach, and that can change how other pills are taken up by your body.

Source: the Mounjaro label (DailyMed).

What the studies show

Source: the FDA label (DailyMed).

The practical rule

  1. Keep taking your antidepressant, and tell your prescriber if your mood changes or side effects get worse.
  2. Tell whoever prescribes your GLP-1 about all the pills you take, including this one.
  3. Ask your pharmacist if any of your pills needs a steady blood level. Checking those may be needed when you start or raise the dose.

Source: the FDA label (DailyMed).

Antidepressants with other GLP-1s

None of the 10 GLP-1 labels name any antidepressant in the drug interaction section. All of them carry the same general caution about swallowed pills, so the answer applies to the whole class.

The same question is asked about Ozempic, Wegovy, Zepbound.

Source: the FDA label (DailyMed).