Key Takeaways
- ACOG, AAP, and the Academy of Breastfeeding Medicine all support breastfeeding for women on stable methadone or buprenorphine who are not using illicit substances
- Only trace amounts of buprenorphine and methadone transfer into breast milk, well below levels that would affect the infant
- Breastfeeding reduces NAS severity, decreases the need for pharmacological NAS treatment, and shortens hospital stays by an average of 5 days
- Breastfeeding provides additional benefits including enhanced bonding, improved maternal mood, and nutritional advantages for the newborn
- Specific contraindications include active illicit drug use, HIV-positive status, and certain co-medications that are unsafe during lactation
- Lactation support from trained professionals is essential for breastfeeding success in recovery, available through Trust SoCal at (949) 280-8360
Current Guidelines on Breastfeeding and MAT
The question of whether women on medication-assisted treatment can safely breastfeed is one of the most frequently asked in prenatal addiction medicine. The answer from every major medical organization is clear: yes, breastfeeding is not only safe but actively encouraged for women on stable doses of methadone or buprenorphine who meet certain criteria. This consensus represents decades of research demonstrating that the benefits of breastfeeding for MAT-exposed newborns far outweigh the minimal risks of medication transfer through breast milk.
ACOG Committee Opinion Number 711, the American Academy of Pediatrics (AAP), and the Academy of Breastfeeding Medicine (ABM) Protocol Number 21 all provide unequivocal support for breastfeeding during MAT. These guidelines reflect the understanding that breastfeeding provides therapeutic benefits specific to opioid-exposed newborns in addition to the well-established general benefits of human milk.
Despite these clear guidelines, many women in MAT programs receive inconsistent or inaccurate advice about breastfeeding from healthcare providers unfamiliar with addiction medicine. At Trust SoCal in Orange County, we ensure that every pregnant patient receives accurate, evidence-based information about breastfeeding and MAT so they can make informed decisions.
ACOG, the AAP, and the Academy of Breastfeeding Medicine all recommend breastfeeding for women on stable MAT doses who are not using illicit drugs and are HIV-negative. This is the standard of care, not an exception.
ACOG Recommendations
ACOG Committee Opinion 711 explicitly states that breastfeeding should be encouraged for women maintained on stable doses of methadone or buprenorphine and who are not using illicit drugs. The committee notes that the small amount of opioid transferred through breast milk may actually ease NAS symptoms in the newborn.
- ACOG supports breastfeeding for women on methadone at any stable dose
- ACOG supports breastfeeding for women on buprenorphine monoproduct or buprenorphine-naloxone
- The guidelines note that abrupt breastfeeding cessation should be avoided as it can worsen NAS
- Shared decision-making between the patient, obstetrician, and pediatrician is recommended
AAP and Academy of Breastfeeding Medicine Positions
The AAP classifies both methadone and buprenorphine as usually compatible with breastfeeding. ABM Protocol 21 provides detailed guidance on managing breastfeeding for opioid-dependent women, including monitoring recommendations and contraindication criteria.
- AAP classifies methadone and buprenorphine as compatible with breastfeeding
- ABM Protocol 21 provides specific clinical guidance for lactation during MAT
- Both organizations emphasize that the benefits of breastfeeding outweigh risks of trace medication exposure
- Combined organizational support provides a strong evidence base for clinical decision-making
Criteria for Safe Breastfeeding During MAT
While breastfeeding is broadly supported during MAT, certain criteria should be met to ensure infant safety. These criteria protect against the rare situations where breastfeeding risks might outweigh benefits.
- Patient must be on a stable MAT dose without recent dose adjustments
- No current use of illicit drugs confirmed by toxicology screening
- HIV-negative status confirmed
- No use of contraindicated medications that transfer significantly into breast milk
- Patient expresses desire to breastfeed and receives lactation support
Medication Transfer in Breast Milk: The Science
Understanding how much medication actually transfers into breast milk helps alleviate fears and supports informed decision-making. Pharmacokinetic studies consistently demonstrate that only trace amounts of both methadone and buprenorphine appear in human breast milk, at levels far below what would produce any pharmacological effect in the nursing infant.
The key metric for assessing medication safety in breastfeeding is the relative infant dose (RID), expressed as a percentage of the maternal weight-adjusted dose. Medications with an RID below 10 percent are generally considered compatible with breastfeeding. Both methadone and buprenorphine fall well below this threshold.
Methadone in Breast Milk
Studies measuring methadone concentrations in human milk have consistently found very low levels regardless of maternal dose. The relative infant dose is estimated at 1 to 5 percent, well within the safe range. Even at higher maternal doses, the amount of methadone delivered through breast milk is pharmacologically insignificant.
- Relative infant dose of methadone in breast milk is 1 to 5 percent of the maternal dose
- An infant consuming 500 mL of breast milk per day from a mother on 100 mg methadone receives approximately 0.05 mg
- This amount is far below any therapeutic or harmful dose for a neonate
- Methadone breast milk concentration does not correlate linearly with maternal dose
Buprenorphine in Breast Milk
Buprenorphine has even lower breast milk transfer than methadone. The relative infant dose is estimated at less than 1 percent. Additionally, buprenorphine has poor oral bioavailability in neonates, meaning that even the small amount present in breast milk is poorly absorbed by the infant gastrointestinal system.
- Relative infant dose of buprenorphine is less than 1 percent
- Poor oral bioavailability further reduces effective infant exposure
- Norbuprenorphine (active metabolite) is present in breast milk at similarly low levels
- Even combined, parent drug and metabolite levels are pharmacologically insignificant for the infant
Naloxone Considerations for Suboxone
Women on buprenorphine-naloxone combinations (Suboxone) may wonder about the naloxone component. Naloxone has extremely poor oral bioavailability (less than 3 percent) and negligible breast milk transfer, making it unlikely to affect the nursing infant.
- Naloxone oral bioavailability is less than 3 percent in adults and likely even lower in neonates
- Breast milk transfer of naloxone is minimal
- No documented cases of naloxone-related adverse effects in breastfed infants of Suboxone-maintained mothers
- Both buprenorphine monoproduct and buprenorphine-naloxone are considered acceptable during breastfeeding
How Breastfeeding Reduces NAS Severity
One of the most compelling arguments for breastfeeding during MAT is its documented effect on reducing neonatal abstinence syndrome severity. Multiple studies have demonstrated that breastfed infants born to mothers on MAT experience milder NAS symptoms, require less pharmacological treatment, and have shorter hospital stays compared to formula-fed counterparts.
The mechanisms behind this benefit are multifactorial. The trace amounts of opioid in breast milk may provide a very gradual weaning effect. The physical contact during breastfeeding regulates infant stress physiology. The nutritional composition of human milk supports gastrointestinal maturation. And the act of breastfeeding itself provides the sucking, comfort, and skin-to-skin contact that are cornerstone nonpharmacological NAS interventions.
Breastfeeding is one of the most powerful tools you have to help your baby through NAS. The combination of trace medication, skin-to-skin contact, nutritional benefits, and comfort provided during nursing actively reduces withdrawal symptoms.
Clinical Evidence for NAS Reduction
The evidence base for breastfeeding benefits in NAS is robust, spanning multiple observational studies, clinical trials, and systematic reviews published in major neonatal and addiction medicine journals.
- Breastfed NAS infants require pharmacological treatment at rates 30 to 50 percent lower than formula-fed infants
- Average hospital stay is 5 days shorter for breastfed infants with NAS
- NAS severity scores are significantly lower in breastfed compared to formula-fed infants
- The benefits are consistent across both methadone and buprenorphine exposure groups
Mechanisms of NAS Symptom Reduction
Several biological and behavioral mechanisms explain how breastfeeding reduces NAS severity, working synergistically to ease the withdrawal process.
- Trace opioid amounts in breast milk provide a gradual, controlled reduction in opioid exposure
- Skin-to-skin contact during nursing reduces cortisol and promotes regulatory stability
- Sucking provides pain relief through non-nutritive mechanisms including endorphin release
- Human milk oligosaccharides and probiotics support the gastrointestinal system during a period of GI vulnerability
Impact on Hospital Stay and Costs
The reduction in NAS severity associated with breastfeeding translates directly into shorter hospital stays, reduced NICU utilization, and significant cost savings. These practical benefits align with the clinical benefits to create a compelling case for breastfeeding support in MAT populations.
- Each day of reduced hospital stay saves approximately $1,500 to $3,000 in healthcare costs
- Reduced need for pharmacological NAS treatment eliminates medication costs and monitoring burden
- Shorter hospitalizations reduce maternal stress and the risk of treatment disruption
- Earlier discharge allows earlier establishment of home routines that support both NAS recovery and maternal recovery
Contraindications: When Not to Breastfeed During MAT
While breastfeeding is broadly supported during MAT, specific contraindications exist that must be evaluated individually. These contraindications protect infant safety by identifying the limited circumstances where breastfeeding risks outweigh benefits. It is critical that contraindication assessments are made by clinicians familiar with both addiction medicine and lactation rather than by applying blanket restrictions.
The most important contraindication is active illicit drug use. Women who are using illicit drugs including heroin, fentanyl, cocaine, methamphetamine, or non-prescribed benzodiazepines alongside their MAT medication should not breastfeed until they have achieved and maintained stable abstinence from these substances.
If you are using any illicit drugs or non-prescribed medications alongside your MAT, you should not breastfeed until you have achieved stable abstinence. Contact Trust SoCal at (949) 280-8360 for help reaching stability so you can safely breastfeed.
Absolute Contraindications
Certain conditions represent absolute contraindications to breastfeeding regardless of MAT status. These are well-established medical guidelines that apply to all women.
- HIV-positive status (in resource-rich settings where safe formula is available)
- Active, untreated tuberculosis until the mother has been on treatment for an adequate period
- Human T-cell lymphotropic virus type I or II infection
- Active herpes simplex lesions on the breast
MAT-Specific Contraindications
Additional contraindications specific to the MAT context primarily relate to ongoing substance use that could expose the infant to harmful levels of drugs through breast milk.
- Active illicit opioid use (heroin, fentanyl, non-prescribed opioids)
- Active cocaine or methamphetamine use, which passes into breast milk in significant concentrations
- Active non-prescribed benzodiazepine use, which can cause infant sedation
- Heavy alcohol use, which passes freely into breast milk at concentrations equal to maternal blood levels
Situations Requiring Individual Assessment
Some situations are not absolute contraindications but require careful individual assessment by the treatment team, lactation consultant, and pediatrician.
- Recent relapse with a return to stable MAT: a waiting period with negative toxicology may be appropriate
- Cannabis use: evidence of harm is limited but caution is generally advised
- Tobacco use: while not a contraindication, resources for cessation should be offered
- Certain psychiatric medications: individual risk-benefit analysis based on specific drugs
Practical Breastfeeding Guidance for Mothers on MAT
The decision to breastfeed is just the first step. Successfully establishing and maintaining breastfeeding while in recovery requires practical knowledge, professional support, and a plan for common challenges. Many mothers on MAT experience additional breastfeeding difficulties related to NAS symptoms in their infant, medication side effects, and the logistical challenges of recovery-related appointments.
Trust SoCal partners with International Board Certified Lactation Consultants (IBCLCs) experienced in working with mothers in recovery to provide the specialized support needed for breastfeeding success. Our goal is to support every mother who chooses to breastfeed while respecting those who make a different choice.
Getting Started: The First 48 Hours
The first 48 hours after delivery are critical for establishing breastfeeding. Initiating skin-to-skin contact and the first latch within the first hour after birth, when the baby is in a quiet alert state, sets the foundation for breastfeeding success.
- Request immediate skin-to-skin contact after delivery and attempt the first latch within 1 hour
- Colostrum, the first milk, is especially beneficial for NAS-exposed newborns due to immune factors and gut protection
- Nurse on demand, aiming for 8 to 12 feedings in the first 24 hours
- Request a lactation consultant visit within the first 12 hours to assess latch and positioning
Managing Breastfeeding with a NAS-Affected Infant
NAS symptoms can make breastfeeding challenging. Irritable, tremulous infants may have difficulty latching and maintaining an effective suck. An uncoordinated suck-swallow-breathe pattern is common in NAS-affected newborns and requires patience and technique modification.
- Use a calm, low-stimulation environment for feedings to reduce infant agitation
- Try different positions, including laid-back or cross-cradle holds, to find what works best
- Brief, frequent feedings may be better tolerated than longer sessions initially
- Supplement with expressed breast milk by cup or syringe if direct breastfeeding is too challenging initially
Pumping and Milk Supply Considerations
Some mothers on MAT may need to pump exclusively for a period, particularly if their baby requires NICU care or has difficulty with direct breastfeeding. Maintaining milk supply through pumping ensures that the baby can receive breast milk even when direct nursing is not immediately possible.
- Begin pumping within 6 hours of delivery if direct breastfeeding is not possible
- Pump at least 8 times per 24 hours to establish and maintain supply
- Hospital-grade double electric pumps are most efficient; most hospitals provide them during the stay
- Expressed breast milk can be fed by cup, syringe, or supplemental nursing system to avoid nipple confusion
When to Supplement with Formula
Formula supplementation may be necessary in some situations and is not a failure. The goal is to ensure adequate infant nutrition and weight gain while supporting breastfeeding to the extent possible and desired.
- Supplementation may be needed if the infant is losing more than 10 percent of birth weight
- High-calorie formula (22 to 24 calories per ounce) may be recommended for infants with poor weight gain
- Combination feeding (breast milk and formula) is a valid approach that still provides NAS benefits
- Any amount of breast milk provides benefit; exclusive breastfeeding is not required to see NAS improvements
Weaning from Breastfeeding While on MAT
When the time comes to wean from breastfeeding, mothers on MAT need to approach the process gradually to avoid worsening NAS symptoms or triggering a delayed withdrawal episode in their infant. While the amount of medication transferred through breast milk is small, abrupt cessation removes a source of comfort, nutrition, and trace opioid exposure that the infant has adapted to.
ACOG and the Academy of Breastfeeding Medicine recommend gradual weaning over a period of weeks rather than abrupt cessation for mothers on MAT. This approach mirrors the gradual weaning approach recommended for all breastfeeding mothers but carries additional clinical significance in the MAT context.
Do not stop breastfeeding abruptly if you are on MAT. Sudden cessation can trigger or worsen NAS symptoms in your baby. Always plan a gradual weaning schedule with guidance from your pediatrician and lactation consultant.
Gradual Weaning Strategies
A gradual weaning approach replaces one breastfeeding session with a bottle feeding every few days, allowing the infant to adjust physiologically and emotionally to the transition.
- Drop one breastfeeding session every 3 to 5 days, starting with the least preferred feeding time
- Replace dropped sessions with formula or expressed breast milk in a bottle
- Maintain the first morning and last evening feedings longest, as these are typically most comforting
- Monitor for any emergence of fussiness, sleep disturbance, or feeding difficulty during the weaning process
Monitoring for Late-Onset or Recurrent NAS Symptoms
In rare cases, weaning from breastfeeding may unmask or reactivate mild NAS symptoms. This is generally manageable with supportive care but should be monitored.
- Watch for increased irritability, difficulty sleeping, or feeding changes during weaning
- Contact your pediatrician if new symptoms emerge that were not present before weaning began
- Slow the weaning process if significant symptoms appear
- Most weaning-related NAS symptoms are mild and resolve without pharmacological treatment
Emotional Aspects of Weaning in Recovery
Weaning from breastfeeding can trigger unexpected emotional responses for any mother, and for mothers in recovery, these emotions may intersect with recovery-related feelings in complex ways. The loss of the breastfeeding relationship and the hormonal changes associated with weaning can affect mood and increase relapse vulnerability.
- Prolactin and oxytocin decreases during weaning can contribute to mood dips
- The end of breastfeeding may trigger grief related to the idealized motherhood experience
- Discuss your emotional response to weaning with your therapist or counselor
- Increased recovery support during the weaning period can mitigate relapse risk
Nutrition and Hydration for Breastfeeding Mothers in Recovery
Adequate nutrition and hydration are essential for both breast milk production and physical recovery from substance use. Many women entering addiction treatment have nutritional deficiencies from chronic substance use that were partially addressed during pregnancy but require continued attention during the metabolically demanding period of lactation.
Breastfeeding increases caloric needs by approximately 300 to 500 calories per day above baseline. Fluid requirements also increase significantly. Women in recovery may need additional dietary guidance to meet these demands while also supporting their physical healing and mental health.
Macronutrient and Caloric Needs
Breast milk production requires substantial energy. Inadequate caloric intake does not typically reduce milk supply in the short term but can compromise maternal health, energy levels, and mood stability.
- Aim for approximately 2,300 to 2,500 calories per day during exclusive breastfeeding
- Protein intake of 65 grams per day supports both milk production and maternal tissue repair
- Complex carbohydrates provide sustained energy for the demands of newborn care
- Healthy fats including omega-3 fatty acids support breast milk composition and maternal mood
Key Micronutrients During Lactation
Certain micronutrients are particularly important during lactation and may be depleted in women with substance use histories. Continuing prenatal vitamins and addressing specific deficiencies supports both milk quality and maternal health.
- Iron: Especially important if anemia was present during pregnancy
- Calcium and Vitamin D: Support maternal bone health and infant skeletal development
- B vitamins: Often depleted by alcohol use; essential for energy metabolism and mood
- Iodine: Critical for infant thyroid function and neurodevelopment through breast milk
Hydration and Substances to Avoid
Adequate hydration directly supports milk production. Women in recovery should also be aware of substances that can affect breast milk or interfere with lactation.
- Drink at least 8 to 10 glasses of water daily, with additional intake during hot weather or exercise
- Caffeine in moderate amounts (up to 300 mg or about 2 cups of coffee) is generally safe
- Alcohol passes freely into breast milk and should be avoided; if consumed, wait at least 2 hours per drink before nursing
- Herbal supplements and teas should be discussed with your provider, as some can affect milk supply or interact with MAT
Addressing Common Myths and Misinformation
Misinformation about breastfeeding during MAT remains widespread among both healthcare providers and the general public. These myths can discourage mothers from breastfeeding when it would benefit both them and their babies. At Trust SoCal, we equip patients with accurate information and the confidence to advocate for evidence-based care.
Encountering a healthcare provider who discourages breastfeeding based on inaccurate information can be disheartening. Being prepared with knowledge from authoritative sources like ACOG and the AAP empowers mothers to have informed discussions with their care teams.
If a healthcare provider tells you that you cannot breastfeed while on MAT, ask them to review ACOG Committee Opinion 711 and ABM Protocol 21. You have the right to evidence-based guidance about breastfeeding.
Myth: MAT Medications Make Breast Milk Dangerous
This is the most persistent and harmful myth. As detailed above, both methadone and buprenorphine transfer into breast milk in pharmacologically insignificant amounts. The relative infant doses are 1 to 5 percent for methadone and less than 1 percent for buprenorphine, well within accepted safety thresholds.
- Fact: RID for both medications is well below the 10 percent safety threshold
- Fact: Decades of clinical experience and research support safety
- Fact: Every major medical organization endorses breastfeeding during stable MAT
Myth: Breastfeeding Will Get the Baby Addicted
The trace amounts of medication in breast milk are far too low to produce dependence, tolerance, or euphoria in the nursing infant. The baby was already exposed to therapeutic levels of the medication in utero through placental transfer.
- Fact: Breast milk medication levels are a fraction of what the baby received through the placenta
- Fact: Breastfeeding actually helps ease the transition from in-utero opioid exposure
- Fact: No studies have shown breastfeeding during MAT increases infant dependence
Myth: If You Relapse Once You Can Never Breastfeed Again
A single episode of relapse does not permanently disqualify a mother from breastfeeding. After returning to stable MAT and confirming negative toxicology screens, breastfeeding can be safely resumed. The decision timeline should be made in consultation with the treatment team.
- Fact: Pump and discard breast milk during the period of active substance use
- Fact: Resume breastfeeding once stable on MAT with confirmed negative drug screens
- Fact: The waiting period depends on the substance used and its elimination half-life
- Fact: Maintaining milk supply through pumping preserves the option to resume breastfeeding
Lactation Support Resources and Next Steps
Successful breastfeeding during MAT requires a support system that includes clinical lactation expertise, peer encouragement, and practical resources. Trust SoCal connects breastfeeding mothers in recovery with IBCLCs, peer lactation counselors, community resources, and the tools needed to make breastfeeding work in the context of their recovery journey.
Whether you choose to breastfeed exclusively, combination feed, or use expressed breast milk, any amount of breastfeeding provides benefits for your NAS-affected baby. The most important thing is that your feeding choice is informed, supported, and free from stigma.
For personalized breastfeeding and MAT guidance, contact Trust SoCal at (949) 280-8360. Our clinical team can connect you with lactation specialists experienced in supporting mothers in recovery throughout Orange County.
Every drop of breast milk you give your baby during MAT is an act of healing. You are providing nourishment, comfort, and medicine all at once. That is extraordinary mothering.
— Trust SoCal Lactation Support Team
Orange County Lactation Resources
Multiple lactation support resources are available in Orange County for mothers in recovery.
- Trust SoCal lactation support coordination: (949) 280-8360
- WIC breastfeeding peer counselors: available at no cost for WIC-eligible mothers
- La Leche League Orange County: free peer support groups and phone consultations
- Hospital-based lactation clinics at major Orange County delivery hospitals
Equipment and Practical Supplies
Having the right breastfeeding equipment available can make the difference between success and early weaning.
- Breast pumps are covered by insurance under the Affordable Care Act at no out-of-pocket cost
- Hospital-grade pump rentals are available for mothers who need higher-efficiency pumping
- Nursing pillows, nipple shields, and supplemental nursing systems address common challenges
- Insulated bags and storage containers allow breast milk transport between home and appointments
Building Confidence and Advocacy Skills
Mothers on MAT may encounter healthcare providers who are unfamiliar with current breastfeeding guidelines. Being prepared to advocate for yourself ensures that you receive the evidence-based support you deserve.
- Carry a printed copy of ACOG Committee Opinion 711 to share with unfamiliar providers
- Ask Trust SoCal for a provider letter confirming your MAT stability and breastfeeding eligibility
- Connect with other breastfeeding mothers in recovery for peer encouragement and practical tips
- Remember that choosing to breastfeed while on MAT is supported by the highest levels of medical evidence
Medical Review Board, MD, ABAM
Medical Director & Reviewer
