Taking Abstral (Fentanyl) While Pregnant: Safety, Risks & Treatment Options
Table of Contents
Key Takeaways
- Abstral isn't considered safe in pregnancy. It's sublingual fentanyl, and it can harm a developing baby.
- Don't stop suddenly. Abruptly quitting opioids in pregnancy carries its own risk, so changes happen with a provider.
- Newborns can withdraw after birth. Prenatal opioid exposure can lead to neonatal abstinence syndrome (NAS).
- Treatment exists and works. Methadone and buprenorphine are the standard care for opioid use disorder in pregnancy.
Is fentanyl safe during pregnancy? No. Abstral is a brand of sublingual fentanyl, a powerful Schedule II opioid, and it can cause serious harm to an unborn baby.
That short answer covers two very different cases, though, which is why it helps to separate them. One is ongoing opioid use or dependence that continues through a pregnancy. The other is a single dose a clinician gives during labor. That one doesn’t carry the same risk as months of exposure.
Most of the concern sits with that first case. If it’s yours, the urge to quit the moment you find out makes sense. But that’s the impulse to be careful with. Stopping opioids abruptly in pregnancy can be more dangerous than staying on them with a provider’s help. Any change should go through a provider first.
Is It Safe To Take Abstral While Pregnant?
No, Abstral isn’t considered safe to take while pregnant. It should be used only if the benefit clearly outweighs the risk to the fetus. And there aren’t adequate, well-controlled studies in pregnant women to lean on.
Abstral was built for a narrow group of patients, and pregnancy was never part of that picture.
What Abstral Is and Why It's Prescribed
Abstral is a fentanyl tablet that dissolves under the tongue. It’s approved for one narrow use: breakthrough pain in adults 18 and older with cancer who are already opioid-tolerant. That means they’ve taken at least 60 mg of oral morphine a day, or an equal dose of another opioid, for a week or longer.
That tolerance requirement exists for a reason. Fentanyl is a synthetic opioid 50 to 100 times more potent than morphine. In someone without that tolerance, breathing can slow to the point of overdose. That’s how most opioid deaths happen. It’s also why Abstral is dispensed only through a restricted federal program, the TIRF REMS Access program.
Abstral During Labor and Delivery
Fentanyl given during labor is a separate, clinician-controlled case. Abstral itself shouldn’t be used during labor and delivery, since fentanyl crosses the placenta and can slow or stop the baby’s breathing (respiratory depression). The short-acting fentanyl used in an epidural or IV during delivery is a different product and a different decision.
Used briefly at delivery, the effect on the baby is usually small. The amount reaching a newborn from epidural or IV fentanyl in labor is low, and it isn’t expected to cause lasting harm in full-term infants. Preterm babies are more sensitive, because they clear the drug more slowly. The treating physician weighs that and watches the newborn after birth.
Fentanyl Pregnancy Risk Category and What the Label Says
Fentanyl was once a Pregnancy Category C drug, and the Abstral label still carries that rating. Category C was never much of a safety signal. It meant the risk to the fetus couldn’t be ruled out, nothing more. The drug was to be used only if the benefit justified it.
Those letter categories are going away. The A, B, C, D, and X categories are being removed and replaced with a narrative risk summary that describes what’s actually known. The letters were dropped because they oversimplified risk and were often misread.
For fentanyl, the honest summary is thin human data. Animal studies showed fentanyl killing developing embryos at doses within the human range. No controlled human study has confirmed a specific birth-defect rate.
How Does Abstral Affect a Developing Fetus?
Opioid exposure during pregnancy is linked to poor fetal growth, preterm birth, stillbirth, certain birth defects, and neonatal abstinence syndrome. The mechanism is direct: fentanyl crosses the placenta and depresses the central nervous system of both parent and fetus.
Birth defects are one of those risks. They’re fairly common at baseline, affecting about 1 in 33 babies, close to 3%. Opioid use appears to push certain risks above that line, though the size of the increase varies between studies. Next to other opioids like hydrocodone, oxycodone, or heroin, fentanyl stands out mainly for its potency. There’s no clear sign of a different pattern of defects.
Plenty of exposed babies are born without clear problems, especially when prenatal care is steady and the opioid use is supervised. Most of the harm traces back to unmanaged use and sudden withdrawal.
Fentanyl and Birth Defects: What the Research Shows
The evidence on fentanyl-specific birth defects is early and limited. A 2023 case series described 10 infants with prenatal fentanyl exposure who shared an unusual set of features. The list included an unusually small head, short stature, a short nose, a small chin, a thin upper lip, cleft palate, and foot and hand differences such as rocker-bottom feet and fused toes. The pattern resembled a genetic condition called Smith-Lemli-Opitz syndrome, and the infants showed temporary disruptions in cholesterol metabolism that later resolved.
The authors raised a possibility: heavy fentanyl exposure might interfere with cholesterol pathways during development. They were careful to call it a hypothesis.
Ten infants is a small series. The doses and timing of exposure were unknown. The illicit supply is often cut with other substances, and many of the parents used more than one drug. Hard to pin the features on fentanyl alone.
Risks of Stopping Abstral Suddenly During Pregnancy
The risk in quitting abruptly is physical, for both parent and fetus. Sudden opioid withdrawal can set off preterm labor. So any change to a prescribed opioid belongs with a provider, and maintenance treatment is usually favored over a detox attempt.
Pregnant and worried about opioid use? Help is available and completely confidential. We can match you with care that fits and help you figure out how to cover it.
Find Opioid Treatment Near YouNeonatal Abstinence Syndrome (NAS) & Opioid Withdrawal
Babies exposed to opioids before birth can go through withdrawal after delivery, a condition called neonatal abstinence syndrome (NAS). The opioid-specific form is neonatal opioid withdrawal syndrome (NOWS). NAS is a group of conditions that show up when a newborn’s supply of the drug stops at birth.
The same exposure that reaches the baby in the womb leaves the newborn physically dependent. At birth that supply is cut off, and the baby’s nervous system reacts. How likely and how severe NAS turns out depends on a few things: the type and amount of opioid, how long exposure lasted, whether the baby came early, and whether other substances were in the mix.
People sometimes say a baby is born addicted. That isn’t accurate, and it isn’t the clinical term. Infants don’t have a substance use disorder. They’re physically dependent and going through withdrawal, which clinicians call NAS or NOWS.
NAS Symptoms and Timeline
NAS symptoms usually begin within 72 hours of birth, though the timing varies. Common signs of newborn opioid withdrawal include:
- Tremors or seizures
- Irritability, poor sleep, or high-pitched crying
- Hyperactive reflexes
- Yawning, stuffy nose, or sneezing
- Poor feeding and sucking
- Loose stools, vomiting, or dehydration
- Increased sweating
Severity tracks with the dose and duration of exposure before birth. Some babies also have low birth weight or jaundice, and more affected newborns may need monitoring in a neonatal intensive care unit. The course differs from one baby to the next.
How NAS Is Treated in Newborns
NAS is treatable, and most babies recover with the right care. Treatment starts with supportive care: a quiet, low-stimulation room, skin-to-skin contact, fluids to prevent dehydration, and higher-calorie feeding to support growth. Many infants improve with these alone.
When withdrawal is more severe, clinicians may use medication. These are small, tapering doses from the same opioid family, given under close watch to ease symptoms safely. A stay in the neonatal intensive care unit can be part of it.
The most useful thing a parent can do is tell the baby’s care team about any opioid exposure. Disclosure isn’t held against you. It lets clinicians watch for withdrawal and treat it early.
Abstral, Fentanyl, and Breastfeeding
Fentanyl passes into breast milk, so feeding while using Abstral calls for a careful talk with your provider. Nursing on Abstral isn’t advised, because of possible sedation or slowed breathing in the infant. A baby can also develop withdrawal symptoms when nursing stops.
A single, short dose of fentanyl at delivery is a different matter. After epidural or IV fentanyl in labor, the amount reaching a breastfed newborn is usually small, around 0.033% of the parent’s dose over 24 hours. No waiting period is needed after short procedures.
| Situation | Guidance |
|---|---|
| Taking Abstral (ongoing sublingual fentanyl) | Avoid nursing; risk of infant sedation, slowed breathing, and withdrawal when nursing stops. |
| Short epidural or IV fentanyl at delivery | Amount in milk is usually small; no waiting period after short procedures; full-term infants aren't expected to be affected. |
| Preterm or medically fragile newborn | Preterm infants are most sensitive because they clear fentanyl slowly; closer monitoring advised. |
| After nonprescribed fentanyl use | Breastfeeding 72 hours after last use has been used alongside substance use treatment and newborn observation. |
Watch a nursing baby for unusual sleepiness, trouble latching, slow or shallow breathing, or limpness, and flag any of it to a clinician. Whether the benefits outweigh the risks is a call to make with the provider who knows your case.
Fentanyl, Fertility, and Trying To Conceive
Chronic opioid use can affect fertility in both men and women. Opioids hold back the hormone signals that drive fertility. Sustained use lowers testosterone in men and disrupts estrogen, progesterone, and menstrual cycles in women, which can reduce fertility while use continues.
A father’s use worries a lot of partners. Current evidence doesn’t show that a father’s opioid use raises the risk of birth defects in a pregnancy. It can still lower his own reproductive hormones. The data here are thinner than what’s known about exposure during the pregnancy itself.
If you or a partner uses opioids and you’re trying to conceive, raise it with a doctor early. Some of these hormonal effects ease once opioid use is treated.
Safer Alternatives and Treatment During Pregnancy
Treatment for opioid use disorder in pregnancy follows a clear standard of care, and quitting cold isn’t part of it. Methadone and buprenorphine (which, despite what a lot of patients are told, don’t just swap one addiction for another) are the standard choices. They keep the opioid level in the blood steady. That spares the fetus the repeated withdrawal that comes with unmanaged use, and it brings cravings down.
Taken as prescribed during pregnancy, the benefits of this medication outweigh the risks. Supervised detox usually isn’t advised, because sudden withdrawal can harm the pregnancy and the risk of return to use is high.
For pain itself, a provider can look at non-opioid options or a different pain plan depending on the cause. Medication for opioid use disorder works best paired with counseling and prenatal care.
Finding Help: Opioid Treatment During Pregnancy
Help for opioid use in pregnancy starts with reaching out, and that’s the hardest part for most people. Reach Recovere is a nonprofit that helps people find treatment and work out how to pay for it, including inpatient and outpatient options for pregnant patients. There’s no judgment in asking, and pregnancy often moves you up the list for a bed.
Our Find-and-Fund approach means you don’t sort it out alone. We help match you to a program and walk through coverage so cost is less of a barrier.
You can take the next step today. Search confidential treatment options for opioid use during pregnancy.
Find Treatment Near YouFrequently Asked Questions
What category is fentanyl in pregnancy?
Fentanyl was historically FDA Pregnancy Category C, meaning fetal risk couldn't be ruled out. The letter categories from A to X are being phased out and replaced with a narrative risk summary.
How long does fentanyl stay in a fetus?
There's no precise published figure for fentanyl clearance in a fetus. Fentanyl crosses the placenta freely, and newborns, especially preterm ones, clear it more slowly than adults, which is why exposed babies are monitored after birth.
What happens if a pregnant woman takes opioids?
Opioid use in pregnancy is linked to poor fetal growth, preterm birth, stillbirth, certain birth defects, and neonatal abstinence syndrome. Treatment with methadone or buprenorphine, rather than abrupt stopping, is the recommended approach.
What are the effects of prenatal fentanyl exposure?
Effects can include neonatal abstinence syndrome, low birth weight, and preterm birth. A 2023 case series also described a possible cluster of birth defects in 10 exposed infants, though that early finding has real limits and doesn't prove fentanyl alone is the cause.
References and Medical Sources
Reviewed by: [MEDICAL REVIEWER SLOT: credentialed reviewer to be assigned]. Written by: [AUTHOR SLOT]. Published June 5, 2026. Last updated June 19, 2026.
- U.S. Food and Drug Administration / DailyMed. Abstral (fentanyl) sublingual tablets prescribing information.
- Centers for Disease Control and Prevention. About Opioid Use During Pregnancy.
- National Institute of Child Health and Human Development. Fentanyl, Drugs and Lactation Database (LactMed), NIH.
- U.S. Food and Drug Administration. Questions and Answers on the Pregnancy and Lactation Labeling Rule (PLLR).
- Centers for Disease Control and Prevention. About Birth Defects.
- U.S. Drug Enforcement Administration. Fentanyl Fact Sheet.
- National Institute on Drug Abuse. Fentanyl, NIH.
- Substance Abuse and Mental Health Services Administration. Methadone and Buprenorphine.
- Genetics in Medicine (peer-reviewed). A novel syndrome associated with prenatal fentanyl exposure, 2023.
- de Vries F, et al. Opioids and Their Endocrine Effects: A Systematic Review and Meta-analysis.
Patrick Bailey
I am a professional writer, mainly in the fields of mental health, addiction, and living in recovery. I attempt to stay on top of the latest news in the addiction and the mental health world and enjoy writing about these topics to break the stigma associated with them.
Patrick Bailey
I am a professional writer, mainly in the fields of mental health, addiction, and living in recovery. I attempt to stay on top of the latest news in the addiction and the mental health world and enjoy writing about these topics to break the stigma associated with them.