As a breastfeeding medicine physician, I am often asked a question in many different forms: "Can I breastfeed if...?" After helping hundreds of families, I can confidently say that breastfeeding can safely continue in almost all situations!
Can I Breastfeed If I’m Taking Medications?
The reassuring truth is that most medications do not pass into breast milk in significant amounts—often less than 1% of the maternal dose.
However, you should also consider whether a medication could interfere with milk production. Several common medications can reduce milk supply, including:
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Decongestants such as pseudoephedrine (Sudafed)
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Antihistamines like Benadryl, Zyrtec, and Claritin, and Unisom
As for medications that truly should never be taken while breastfeeding, the list is surprisingly small. These include:
- Chemotherapy
- Certain seizure medicines
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Drugs of abuse such as cocaine or heroin
- Ergot alkaloids (ergotamine, used for some migraine patients)
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Radioactive medications used in some thyroid procedures
- High-dose iodine
- Buprenorphine, used for addiction treatment
Many common cold and flu remedies are well studied and safe in breastfeeding, as well as most antidepressants. If you’re ever unsure, check with your doctor or find more information on the Infant Risk website or LactMed.
Can I Breastfeed If I need an X-ray, Mammogram, MRI, or CT Scan?
Absolutely. Imaging studies are overwhelmingly safe in breastfeeding, and you do not need to pump and discard your milk afterward.
Here are the essentials:
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X-rays, CT scans, and mammograms do not make your body—or your milk—radioactive.
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Most contrast dyes, including those used for CT scans and MRIs, are safe and compatible with breastfeeding.
- The only exception is radioactive tracer material used in specific nuclear medicine studies, such as some thyroid scans. In these limited cases, temporary interruption may be recommended.
Can I Breastfeed If I Have a Drink (or Two)?
Yes. Breastfeeding and moderate alcohol intake can safely coexist. After one or two drinks, less than 1% of the alcohol you consume enters your breast milk—even at peak levels - and then quickly decreases. Alcohol gradually clears from breast milk at the same rate it clears from your bloodstream, typically within 8 hours after moderate drinking.
A fun perspective: orange juice naturally contains more alcohol than the milk of a mom who has had a couple of drinks.
If you feel sober enough to safely care for your baby, you are generally safe to breastfeed.
Can I Breastfeed If I Use Marijuana?
Be cautious with THC and related compounds. They are fat-soluble, which means they accumulate in maternal fat stores and clear very slowly from the body. Breast milk concentrations can remain elevated for days to weeks, even after a single use.
For this reason, I advise caution. Avoiding marijuana while breastfeeding is the safest choice.
Can I Breastfeed If I’m Sick?
In almost all cases: yes.
Whether you have a cold, flu, COVID, or even mastitis, breastfeeding can and should continue. By the time you feel sick, your baby has already been exposed, and your body is making antibodies that pass directly into your milk. This gives your baby targeted immune protection.
If your baby is especially vulnerable (premature, medically fragile), wearing a mask while feeding can help reduce respiratory exposure.
Can I Breastfeed If I Have Flat or Inverted Nipples, Piercings, or Skin Tags?
These are extremely common concerns during pregnancy, and many moms worry unnecessarily that their nipple anatomy will prevent breastfeeding. In reality:
Flat or Inverted Nipples
Most babies can breastfeed effectively even when nipples appear flat or inverted. Babies latch to the breast, not the nipple, so a protruding nipple is not required!
Skin Tags on the Nipple
Nipple skin tags are benign and typically cause no issues with latch, comfort, or milk flow.
Nipple Piercings
You can breastfeed after nipple piercings if you remove the jewelry. Scarring can occasionally affect milk flow but most women with pierced nipples do not have any issues breastfeeding.
If you have any concerns about nipple shape, appearance, or prior piercings, a prenatal lactation consultation can be incredibly helpful. Reach out to a lactation consultant or breastfeeding medicine doctor for further guidance if you are nervous!
The Bottom Line: Is Breastfeeding Compatible With Real Life?
Most of the time, the answer to "Can I breastfeed if...?" is a confident yes. Breastfeeding is remarkably compatible with real life, and there are very few situations where it must be stopped. If you face a scenario that feels uncertain, reach out to a board certified lactation consultant (IBCLC), your OB/GYN doctor, or a physician who specializes in breastfeeding medicine.