Suboxone and Pregnancy: Is It Safe, and What Happens to the Baby?

One of the most frightening phone calls I get goes like this. A woman tells me she just found out she is pregnant. She is using opioids, or she is already on Suboxone, and she wants to know whether she has already hurt her baby. Then she asks whether she should stop everything today.

The short answer to the second question is no. Please do not stop on your own. Here is why, and here is what the research actually says.

Stopping suddenly is the dangerous choice

The instinct to quit cold the moment you see a positive test makes complete sense. It is also the choice with the most risk.

The CDC states plainly that quickly stopping opioids during pregnancy is not recommended. It can cause preterm labor, fetal distress and miscarriage. The American College of Obstetricians and Gynecologists says a pregnant person with opioid use disorder should not stop without medical supervision, because quitting suddenly often leads to relapse, and relapse can harm both mother and baby.

That last part matters most. A relapse after a stretch without opioids is when overdose risk is highest, because tolerance drops fast. I wrote about that in detail in what Presley Gerber's death teaches every family. Pregnancy does not change that biology. It just means two lives are on the line instead of one.

Current recommendations from the CDC, ACOG, the World Health Organization and the American Society of Addiction Medicine all point the same direction: medication, either buprenorphine or methadone, not detox.

Does Suboxone cause birth defects?

This is usually the first fear, so I will take it head on.

ACOG states that, based on many years of research, opioid treatment medication has not been found to cause birth defects.

For years doctors worried specifically about the naloxone in Suboxone, and many switched pregnant patients to buprenorphine alone, sold as Subutex. A large 2024 study in JAMA looked at that question directly. Researchers compared more than 3,400 pregnancies exposed to the combination buprenorphine and naloxone in the first trimester with nearly 2,000 exposed to buprenorphine alone. The rate of major birth defects was 5.2% with the combination and 5.0% with buprenorphine alone, a difference that was not meaningful once the groups were properly compared.

ACOG's guidance says the same thing in plainer terms: studies of buprenorphine with naloxone in pregnancy found no adverse effects, with outcomes similar to buprenorphine alone. Which formulation is right for you is a decision we make together with your obstetrician, but you do not need to panic about the one you are on.

Buprenorphine compared with methadone

Both medicines are recommended in pregnancy. Both work. For the baby, though, the research has leaned toward buprenorphine.

The biggest study to date, published in the New England Journal of Medicine in 2022 by researchers at Harvard and Stanford, looked at more than 31,000 pregnancies: 21,976 treated with buprenorphine and 9,443 treated with methadone. Compared with methadone, babies exposed to buprenorphine had:

• Less withdrawal at birth: 52% versus 69.2%
• Less preterm birth: 14.4% versus 24.9%
• Less low birth weight: 8.3% versus 14.9%
• Fewer small-for-age babies: 12% versus 15.3%

The earlier MOTHER trial, a randomized study led by Johns Hopkins, found that babies exposed to buprenorphine needed significantly less morphine to treat withdrawal and went home from the hospital sooner than babies exposed to methadone.

If you are already stable on methadone, that is not a reason to switch in the middle of a pregnancy. Switching carries its own risks. But if you are starting treatment while pregnant, those numbers are worth knowing.

What happens to the baby at birth

I will not pretend this part away. Many babies exposed to buprenorphine or methadone in the womb go through some withdrawal after birth. Doctors call it neonatal abstinence syndrome or neonatal opioid withdrawal syndrome. Not every baby gets it, and it is temporary and treatable.

The CDC is direct about this: withdrawal in the newborn is an expected condition, and concern about it alone should not keep a doctor from prescribing treatment. The alternative, an unstable pregnancy on the street supply, is far more dangerous to that baby than a few days of monitored withdrawal in a hospital nursery.

Tell the hospital you are on buprenorphine before you deliver. A pediatric team that knows ahead of time can watch the baby properly from the first hour.

Your dose may need to change

Pregnancy changes how your body processes medication. Blood volume goes up and metabolism speeds up, especially later in pregnancy, and some women find their usual dose stops holding them as well. That is not failure and it is not drug-seeking. It is physiology.

If you start feeling withdrawal or cravings you did not have before, call me. Adjusting a dose is simple. Riding it out alone is how people end up back where they started.

Breastfeeding on Suboxone

In most cases, yes, you can breastfeed.

ACOG encourages breastfeeding for women who are stable on their medication, are not using illicit drugs, and have no other reason to avoid it, such as HIV infection. ACOG also notes that the American Academy of Pediatrics supports breastfeeding on methadone or buprenorphine regardless of dose, because very little of the medicine passes into breast milk.

Breastfeeding may actually help the baby. ACOG reports it has been linked to milder withdrawal symptoms, less need for medication and shorter hospital stays.

The exception: if you relapse, stop breastfeeding and call your doctor.

The months after delivery are the riskiest

This surprises people, but ACOG reports that women with opioid use disorder relapse far more often after delivery than during pregnancy. Sleep deprivation, a newborn, losing insurance or a treatment program, and fear of losing custody all pile up at once. ACOG notes that substance use and overdose are increasingly recognized as major contributors to deaths in the year after pregnancy.

That is why the CDC advises against stopping treatment right after birth, at least until the baby is sleeping through the night and done breastfeeding. Many women stay on it much longer. The CDC says people can safely continue treatment for as long as they need it, from a month to a lifetime.

Keep naloxone in the house after the baby comes home. ACOG recommends that postpartum women with opioid use disorder have it on hand.

How I handle pregnant patients

I am not an obstetrician, and I will not pretend to be. You need prenatal care from an OB, and I will work with yours. What I do is manage the buprenorphine: getting you started safely, adjusting the dose as the pregnancy goes on, and staying reachable when something changes at 2 in the morning.

I answer my own phone 24 hours a day, every day of the year. A scheduled visit is $200. If you need me to come in outside scheduled hours, it is $300. Follow-ups are about every 28 days. I do not bill insurance, but you can still use your insurance at the pharmacy for the medication and for lab work. Your treatment records are protected under HIPAA and the stricter federal rule for substance use treatment, 42 CFR Part 2.

If you are using fentanyl right now, starting buprenorphine has to be timed carefully to avoid precipitated withdrawal, which you do not want in pregnancy. I explain how we prevent that in starting Suboxone after fentanyl.

And if you are on methadone and wondering about switching, read what the methadone-to-Suboxone transition actually involves before deciding anything, and talk to both your OB and me first.

What to do today

1. Do not stop anything on your own.
2. Tell your OB the truth about what you are taking. Their job is to keep you and the baby safe, not to judge you.
3. Call me at 479-856-1505, any hour, and we will figure out the safest next step together.

You called because you care about this baby. That is the right instinct. Now let's make sure the plan matches it.

More reading: What the first visit looks like · What treatment costs · The withdrawal timeline