GLP-1 and IVF Egg Retrieval: Hold + Washout (2026)

If you take a GLP-1 — Ozempic, Wegovy, Mounjaro, Zepbound, Rybelsus or similar — and you're heading into IVF, there are actually two completely different timing questions, and confusing them is easy. The first is short and procedural: egg retrieval is done under sedation, GLP-1s slow stomach emptying, so anesthesia teams may want the drug held briefly before the procedure to reduce aspiration risk. The second is much longer and is the one that really matters for your baby: GLP-1 drugs are not recommended in pregnancy, and the labels tell you to stop well before you conceive — for semaglutide, at least 2 months before a planned pregnancy because of its long washout ^[1]. Because IVF deliberately aims at conception, the pre-conception washout, not just the day-of anesthesia hold, is the decision that needs to be right. This is genuinely your-money-or-your-life territory (it involves pregnancy), so the goal of this article is to explain both holds clearly and send you to your fertility clinic and prescriber with the right questions — not to let you set the timing yourself. For the general version of the sedation question, see holding a GLP-1 before surgery and anesthesia.

The honest summary: two holds, not one

• Hold #1 — the anesthesia hold (short). Egg retrieval (transvaginal oocyte aspiration) is done under sedation/anesthesia. Because GLP-1s delay gastric emptying, the 2023 American Society of Anesthesiologists (ASA) guidance advised holding daily-dosed GLP-1s on the day of a procedure and weekly-dosed ones (Ozempic, Wegovy, Mounjaro, Zepbound) about a week before ^[2].
• Hold #2 — the pre-conception washout (long, and the one that matters most). GLP-1s are not recommended in pregnancy. The Ozempic/Wegovy label says discontinue semaglutide at least 2 months before a planned pregnancy due to its long washout ^[1]. Tirzepatide (Mounjaro/Zepbound) carries the same “discontinue when pregnancy is recognized” warning, and reproductive reviews suggest stopping it before conception ^[3][4][5].
• IVF collapses the two questions. Because IVF is aiming at pregnancy, many fertility clinics treat the longer washout as the governing timeline — so the drug is often already stopped well before retrieval, which also satisfies the anesthesia hold.
• The anesthesia concern is real but not proven to cause more lung injury. GLP-1 users have markedly higher odds of retained stomach contents under sedation ^[6][7]; a one-week hold may not fully empty the stomach ^[8]; but a blanket increase in aspiration pneumonia has not been clearly shown — which is why guidance evolved toward individualized plans ^[9].
• Bottom line: don't time this yourself. The right plan depends on the drug, why you take it, your dose schedule, and your clinic's protocol. Coordinate with both your prescriber and your fertility clinic well ahead of starting a cycle.

Hold #1: the anesthesia hold for egg retrieval

Egg retrieval is a short outpatient procedure, but it's done under sedation or anesthesia, with the airway unprotected. GLP-1 receptor agonists slow how fast the stomach empties — part of how they reduce appetite — so the stomach can still hold food or fluid even after the usual pre-procedure fasting window. A stomach that isn't empty creates a theoretical risk of regurgitating and aspirating contents into the lungs while you're sedated. That is the entire basis for the anesthesia hold.

The evidence that GLP-1s leave more food behind is strong. Silveira 2023^[6], a retrospective study of patients having upper endoscopy under sedation, found that recent semaglutide users had retained gastric contents far more often than non-users even after standard fasting. A prospective gastric-ultrasound study in volunteers showed the same direction of effect (Sherwin 2023^[7]). What is not well established is that this translates into more actual aspiration injury: pooled analyses have shown much higher odds of retained stomach contents without a clear, significant rise in aspiration pneumonia. That gap between “fuller stomach” and “more lung injury” is exactly why specialty guidance shifted over 2023–2024 from a reflexive blanket hold toward individualized assessment (Hashash 2024^[9]).

In June 2023 the ASA issued consensus-based guidance recommending patients hold their GLP-1 before elective procedures: skip the dose on the day of the procedure for daily-dosed agents, and stop weekly-dosed agents (semaglutide as Ozempic/Wegovy, tirzepatide as Mounjaro/Zepbound) about a week beforehand, regardless of indication (Hashash 2024^[9]; ASA newsroom). The 2024 multisociety guidance — written jointly by anesthesiology, gastroenterology and bariatric-surgery groups — softened this toward shared decision-making, and offered a middle path of a clear-liquid diet for at least 24 hours before the procedure for patients in whom delayed emptying is a concern, plus options like point-of-care gastric ultrasound or treating the patient as “full stomach” with a rapid-sequence technique (Kindel 2024^[10]).

Hold #2: the pre-conception washout — the one that really matters

This is the part that makes IVF different from a colonoscopy or a knee operation. GLP-1 drugs are not recommended during pregnancy. Animal studies showed developmental harm — increased risk of structural abnormalities, reduced growth and pregnancy loss — and human pregnancy safety data remain limited, so the labels advise stopping the drug before conception and discontinuing it if pregnancy occurs. Because IVF is specifically aiming at pregnancy, the washout is not optional background detail; it is the central timing decision.

“Discontinue OZEMPIC in women at least 2 months before a planned pregnancy due to the long washout period for semaglutide.”

— FDA Ozempic (semaglutide) label, §8.3 Females and Males of Reproductive Potential

That two-month figure for semaglutide (Ozempic and, in the obesity setting, Wegovy, whose label likewise says to discontinue “at least 2 months before they plan to become pregnant”^[11]) is driven by the drug's long half-life — roughly a week — which means it takes well over a month for the medication to clear substantially from the body. The Section 8.1 pregnancy statement notes there are limited data with semaglutide use in pregnant women to inform a drug-associated risk, and the drug should not be used in pregnancy (FDA label^[1]). Tirzepatide (Mounjaro, Zepbound) carries an analogous warning to discontinue when pregnancy is recognized; reproductive-medicine reviews, reflecting its long half-life, suggest stopping it on the order of a month or so before attempting conception (Zepbound label^[4]; Mounjaro label^[5]; Minis 2023^[3]). The exact number varies a little between the FDA label, regulatory monographs and clinical reviews, which is one more reason to get your specific drug's timing from your clinic rather than from a number you read online.

How fertility clinics tend to put it together

Put the two holds side by side and the practical sequence usually falls out on its own. Because the pre-conception washout (Hold #2) is measured in weeks-to-months and the anesthesia hold (Hold #1) is measured in days-to-a-week, the longer washout almost always governs. In practice many fertility programs ask patients to stop the GLP-1 before the IVF cycle begins — often around the start of, or before, ovarian stimulation — so that by the time of egg retrieval the drug has been off long enough to satisfy both the conception-safety concern and the empty-stomach concern. Protocols genuinely differ by clinic and by drug, however, and there is no single nationally mandated number, so the only safe move is to confirm your clinic's instructions.

What to do — the practical upshot

• Tell your fertility clinic AND your prescriber before you start a cycle. Name the exact drug (Ozempic, Wegovy, Mounjaro, Zepbound, Rybelsus, etc.), your dose, and when you last took it. Ask both: when should I stop for the pregnancy washout, and is a separate anesthesia hold needed for retrieval?
• Treat the washout as the governing timeline. The semaglutide label says at least 2 months before a planned pregnancy^[1]; tirzepatide and other agents have their own (generally shorter) timelines^[3][4]. Your clinic will give you the number for your drug.
• Don't restart the drug once you're trying to conceive or are pregnant. GLP-1s are not recommended in pregnancy; if a transfer succeeds, the drug stays off.
• Flag any ongoing GI symptoms near retrieval. Nausea, vomiting, bloating or feeling full are the strongest predictors of retained stomach contents under sedation (Silveira 2023^[6]; Santos 2024^[8]). If you have them, say so — it may change the anesthesia plan.
• Use reliable contraception in the lead-up if advised. GLP-1s can restore fertility faster than expected (Minis 2023^[3]); your clinic may want contraception during the washout so conception happens on the planned, drug-free schedule.
• Follow YOUR clinic's written instructions. Protocols differ by center and by drug; the consensus documents leave room for local judgment. The sheet your fertility unit gives you is the one that counts.

Bottom line

GLP-1 drugs and IVF involve two separate holds. The short one is procedural: egg retrieval is done under sedation, GLP-1s leave more food in the stomach, and guidance has moved from a reflexive one-week hold toward an individualized plan (with a one-week hold possibly not even emptying the stomach reliably) (Kindel 2024^[10]; Santos 2024^[8]). The long one is the one that protects a future pregnancy: GLP-1s are not recommended in pregnancy, and the semaglutide label says to stop at least 2 months before a planned pregnancy^[1], with tirzepatide carrying its own “discontinue in pregnancy” labeling and washout timeline^[4][5]. Because IVF aims at conception, that longer washout usually governs and often takes care of the anesthesia hold along the way. This is pregnancy-safety territory where the exact timing matters, so the single safest thing you can do is not decide it alone: coordinate with both your prescriber and your fertility clinic before you start a cycle, and follow their written plan.

This article is educational and is not medical advice. It concerns pregnancy and fertility, where accurate washout timing genuinely matters; every claim above is sourced to an FDA prescribing-label section, a peer-reviewed study, or a society clinical-practice update verified against the live FDA DailyMed and PubMed databases before publication. Confirm your own pre-cycle plan with your prescriber and your fertility clinic.