Vaping While Breastfeeding: Nicotine, Smoking and How to Quit

If you vape or smoke and you’re breastfeeding, you’ve probably heard mixed messages. Some people will tell you to stop breastfeeding; others say vaping is harmless. Neither is right.

Here’s the honest picture: nicotine does get into your milk, but breastfeeding still protects your baby, and every step you take to cut down helps. This guide covers what the evidence says, how to lower your baby’s exposure today, and where to get free support to quit. For more on medicines and substances, see our hub on what’s safe while breastfeeding.

Should you keep breastfeeding if you vape or smoke?

Yes. The CDC says mothers who use tobacco or e-cigarettes can breastfeed but should be encouraged to quit. If you can’t quit, breast milk remains the recommended food for your baby.

That matters because formula doesn’t remove the main dangers. Secondhand smoke harms babies whether they’re breastfed or formula-fed, and breastfeeding itself has well-known benefits for your baby’s health. You can read more in our article on the benefits of breastfeeding.

Does nicotine pass into breast milk?

Yes. The CDC says nicotine and other chemicals in tobacco can pass to your baby through breast milk. LactMed describes a study of mothers who smoked about 17 cigarettes a day, where milk nicotine levels were similar during smoking and during use of a high-strength (21 mg) patch, and lower with weaker patches.

For vaping specifically, the CDC says little is known about the effects of a mother’s e-cigarette use on her baby’s health. What we do know:

• Most vapes contain nicotine, sometimes in high amounts, and nicotine is what reaches milk.
• According to the CDC, vape aerosol generally has fewer harmful chemicals than cigarette smoke, but it can still contain heavy metals such as nickel, tin and lead, ultrafine particles, cancer-causing chemicals and flavorings. Fewer harmful chemicals doesn’t mean safe.

How nicotine affects milk supply and your baby

Your milk supply

The CDC says smoking can reduce milk supply, likely because nicotine lowers prolactin, the hormone that drives milk production. LactMed adds that smoking often leads to earlier weaning. If you’ve noticed your supply dropping, our guide on how to increase milk supply can help alongside cutting down.

Your baby

LactMed and the CDC describe these concerns:

• Sudden infant death syndrome (SIDS): Maternal smoking is a major risk factor for SIDS.
• Breathing and ear problems: Secondhand smoke raises the risk of bronchitis, pneumonia, ear infections and reduced lung function.
• Sleep risks: The AAP says the risk of sleep-related infant death is especially high when babies sleep in the same bed as an adult who smokes or vapes.

Vaping vs. smoking: is one better?

	Cigarettes	Vapes (e-cigarettes)
Nicotine reaches milk	Yes	Yes, if the liquid contains nicotine
Smoke or aerosol toxins	Many harmful chemicals	Fewer, but still harmful chemicals
Studied in breastfeeding	Yes, for decades	Very little
Secondhand exposure	Smoke and residue	Aerosol and residue
Approved as a quit aid	Not applicable	No

The CDC says e-cigarettes may help adults who smoke only if they fully replace all cigarettes. Using both (dual use) doesn’t protect your health. Proven, approved quit aids are a better route while breastfeeding.

Nicotine replacement while breastfeeding

Nicotine replacement therapy (NRT), such as patches, gum and lozenges, gives you nicotine without the smoke and its toxins.

• The Academy of Breastfeeding Medicine considers NRT compatible with breastfeeding, with the type chosen based on your needs (as summarized by LactMed).
• LactMed notes that the American Academy of Pediatrics prefers shorter-acting products, like gum or lozenges, over patches.
• Some experts recommend avoiding all nicotine while nursing, and no studies have settled the question. Only patches have been studied in nursing mothers.

LactMed also lists bupropion, a prescription medicine, as an alternative quit aid to consider. Because doses, timing and your health history all matter, ask your doctor or pharmacist to help you choose. Don’t combine NRT with continued vaping or smoking unless your provider advises it.

How to lower your baby’s exposure today

Even before you quit, the CDC recommends these steps:

1. Never vape or smoke near your baby.
2. Go outside, away from open windows and doors.
3. Keep your home and car completely smoke- and vape-free, for everyone.
4. Change your top and wash your hands after vaping or smoking, before you pick up your baby.
5. Don’t bed-share if you smoke or vape. Put your baby to sleep on their back in their own crib or bassinet.
6. Store vape liquids and pods locked away. The CDC warns that children have been poisoned by swallowing or touching e-liquid. If your child gets into it, call Poison Control at 1-800-222-1222.

LactMed’s data show that milk nicotine levels go down as the dose goes down: milk levels were about 30% lower on a 14 mg patch than while smoking, and roughly a third of smoking levels on a 7 mg patch. In other words, every bit you cut back reduces what reaches your baby.

Getting help to quit

Quitting is hard, and the postpartum months bring stress and broken sleep. You don’t have to do it alone:

• Call 1-800-QUIT-NOW (1-800-784-8669) for free coaching in your state. The CDC points breastfeeding mothers to this line.
• Tell your doctor, midwife or pediatrician. They can help with NRT or other medicines that fit breastfeeding.
• Ask your partner and household to quit with you, or at least never to smoke or vape indoors or in the car.
• Plan for triggers. Night feeds, coffee and stress are common ones. If you’re relying on coffee to get through the day, see our guide to caffeine while breastfeeding.

A slip is not failure. Many people try several times before they quit for good.

When to call a doctor

Call your baby’s doctor if your baby:

• is unusually fussy, jittery or not sleeping,
• feeds poorly or isn’t gaining weight,
• has repeated coughs, wheezing or ear infections, or
• may have swallowed or touched vape liquid (call Poison Control first, or 911 if they have trouble breathing or a seizure).

Talk to your own doctor if you want help quitting, if you feel low, anxious or overwhelmed, or if your milk supply seems to be dropping. A lactation consultant can also help; our breastfeeding support page lists where to find one.