Semaglutide and Pregnancy: the Guidance Is Clear

If you are pregnant right now and taking semaglutide

Stop taking semaglutide and contact your GP or midwife today. That is the short answer, and it matters more than anything else on this page.

Semaglutide is not licensed for use in pregnancy. Preclinical animal studies showed embryo-foetal harm at exposures relevant to human doses, and there are no adequate human data to establish safety. The absence of evidence is not reassurance; it is the reason the SmPC (the prescribing document filed with the regulator) lists pregnancy as a contraindication. The NHS guidance on semaglutide states it should not be used during pregnancy and advises stopping treatment if you become pregnant.

In practice, this also means telling your maternity team exactly which medicine you were taking and when you last used it. Semaglutide has a half-life of around one week, so it clears more slowly than a daily tablet would. Your midwife or obstetrician can factor that into any monitoring decisions. If you have questions about whether and how semaglutide affects pregnancy, our page on semaglutide's effects in pregnancy goes into the preclinical picture in more detail.

The weight you were managing before treatment remains a health consideration during pregnancy too. Your GP or midwife can advise on appropriate support for healthy weight management throughout gestation, without medication.

If you are planning a pregnancy while on semaglutide

This is the decision most women in their thirties face quietly, often while refilling a repeat prescription. The guidance from the MHRA is to stop semaglutide before trying to conceive and to observe a wash-out period, the exact timing should be agreed with your prescriber, who can weigh your current dose, treatment duration and individual health picture.

There is a practical reason the wash-out period matters: semaglutide's long half-life means the medicine is still active for several weeks after the last dose. Planning gives your body time to clear it before a pregnancy begins.

Oral contraception is a separate but related consideration. The NHS England guidance on weight-management injections notes that women on oral contraceptives should use an additional non-oral method (such as condoms) for the first four weeks of semaglutide treatment and for four weeks after each dose increase, because the medicine's effect on gastric emptying can reduce pill absorption. If you are actively avoiding pregnancy while on semaglutide, that is worth checking now, not after a missed dose of the pill.

If you want to understand what the formal pregnancy classification for semaglutide means in practice, that page explains the regulatory framing behind the advice. You can also find a focused overview of using semaglutide during pregnancy if you want to read the full picture before speaking to your prescriber.

Restarting semaglutide after pregnancy or breastfeeding

This is a question our prescribers hear most weeks, and the answer depends on timing. Semaglutide is not recommended while breastfeeding: it is not known whether the medicine passes into human breast milk, and the precautionary position is to wait.

Once breastfeeding has ended and you have discussed the plan with your GP or a prescriber, restarting weight-management treatment is a straightforward clinical conversation. The titration schedule begins again from the starting dose rather than picking up where you left off; your body's response after pregnancy may differ from your earlier experience, and a fresh clinical assessment matters. If you were using Wegovy specifically, our page covering Wegovy and pregnancy is worth reading before that conversation, and you can also read more about how Wegovy works as a refresher.

Some women find the postpartum period is actually the moment they want to address weight more seriously, particularly if weight gained during pregnancy has compounded a longer-term pattern. That is a legitimate reason to seek treatment, once breastfeeding is behind you. A private online consultation means you do not need a GP referral and there is no waiting list to join; a prescriber reviews your answers the same working day. If you are wondering whether you now meet the criteria, our treatment page outlines the eligibility thresholds.

For a broader look at how semaglutide sits alongside other weight-management options, the weight loss overview is a useful starting point. And if you want to read more about the clinical team behind every review at nume, the prescriber profile is there. Any question not covered here can go to our support team, seven days a week.