Is It Safe to Take Semaglutide While Pregnant?

Why isn't semaglutide recommended in pregnancy?

The short answer is that there is not enough evidence to say it is safe, and the evidence that does exist from animal studies gives real cause for caution. In studies on rats and rabbits, semaglutide caused foetal growth restriction and structural abnormalities at doses that produced exposures similar to those seen in people taking therapeutic doses. Regulators apply a precautionary approach when animal data flags potential harm and human pregnancy data is absent: the benefit-risk calculation that might justify treatment in a non-pregnant adult simply does not hold when a developing baby is involved.

Semaglutide also reduces food intake significantly. Sustained caloric restriction during pregnancy carries its own risks for foetal development, independent of any direct drug effect. For both reasons, the prescribing information and UK regulatory guidance place pregnancy firmly in the contraindicated category. You can read the full clinical detail in the Wegovy Summary of Product Characteristics on the eMC, which is the definitive reference for prescribers.

This is not a situation where "a small dose might be fine." The guidance applies to all doses, all trimesters, and both the injection and the oral tablet form approved in June 2026.

What should you do if you become pregnant while taking Wegovy?

Stop treatment. That is the consistent advice from UK prescribers and regulators. Do not wait to discuss it at a planned review, contact your GP or midwife as soon as a pregnancy test is positive. Your prescriber or the team at the clinic through which you obtained the prescription should also be informed, so they can update your records and support any follow-up you need.

The NHS England guidance on weight-management injections is explicit that women should stop treatment and report any pregnancy to their healthcare team. This applies whether you were using Wegovy through an NHS specialist service or through a private route. Semaglutide has a half-life of roughly one week, meaning it clears the body over several weeks after the final dose, something your GP can factor into monitoring decisions.

If you have concerns about weight management during pregnancy, that conversation belongs with your midwife or obstetric team, who can advise on safe and appropriate support. Questions about what to do after delivery, once breastfeeding ends, are worth raising with a prescriber at the right time. Our clinical team is available to discuss post-pregnancy treatment planning when that becomes relevant.

What about contraception while on semaglutide?

This is a question our prescribers hear regularly, and it matters. For women using tirzepatide, there is specific guidance to use an additional non-oral contraceptive method during the first four weeks of treatment and for four weeks after each dose increase, because the medicine slows gastric emptying and may reduce absorption of the oral contraceptive pill. For semaglutide, current NHS evidence does not identify the same degree of pill-absorption interference, but the broader recommendation to use reliable contraception while on any GLP-1 weight-loss medicine remains in place.

The NHS Inform Scotland page on diabetes and weight-loss medication covers the contraception advice clearly. If you are on the combined oral contraceptive pill and starting semaglutide, tell your prescriber so they can advise on whether additional contraception is sensible for you specifically. This is the kind of conversation that happens at the consultation stage, not something to piece together from general reading.

For more on the broader risks associated with semaglutide and pregnancy, including the wash-out period before trying to conceive, that page covers the detail thoroughly. The MHRA advises a wash-out period before conception attempts; your prescriber can give you a personal timeline based on when you last dosed.

Can you restart semaglutide after giving birth?

Not while breastfeeding. If you are wondering whether semaglutide is safe in pregnancy or during the postpartum period, the position is the same: it is not recommended because it is not known whether it passes into human breast milk, and animal studies suggest it may. For a medicine that reduces appetite substantially, there is also a theoretical concern about nutritional adequacy at a time when both mother and infant have significant needs.

Once breastfeeding has ended, restarting semaglutide is a clinical decision that needs individual assessment. Weight that has changed during pregnancy, any new health conditions, current medications and personal circumstances all feed into whether treatment is appropriate and which option best fits. The Wegovy treatment overview explains the licensed criteria and what a consultation covers, and if you want to explore whether Wegovy is safe for pregnancy in more clinical depth, that page sets out the evidence and guidance thoroughly. There is no clinical reason to rush, and every reason to have the conversation with a prescriber rather than restart independently.

If you want to understand how Wegovy compares to other licensed options available through a private prescription before you are ready to consult, the weight-loss treatment overview sets out the full picture, and our guide on whether it is safe to take semaglutide is a useful read alongside it before your appointment. If you have broader questions about whether semaglutide is safe, including how it is assessed for different groups of patients, that page brings together the key evidence in one place. When the time is right, you can speak to our prescribers through a free consultation, reviewed by a real clinician, not software, the same day.