Can you take minocycline while breastfeeding?
What LactMed says
The National Library of Medicine’s own summary, quoted in full. We do not write a verdict of our own on this question, and we do not compress theirs into a label.
Many reviews state that tetracyclines are contraindicated during breastfeeding because of possible staining of infants’ dental enamel or bone deposition of tetracyclines. However, available literature indicates that there is not likely to be harm in short-term use of minocycline during lactation because milk levels are low and absorption by the infant is inhibited by the calcium in breastmilk. Although the manufacturer recommends avoiding breastfeeding during administration of minocycline and for 4 days after the last dose, short-term use of minocycline is probably acceptable in nursing mothers. As a theoretical precaution, avoid prolonged or repeat courses during nursing. Monitor the infant for rash and for possible effects on the gastrointestinal flora, such as diarrhea or candidiasis (thrush, diaper rash). Black discoloration of breastmilk has been reported with minocycline. Topical minocycline for acne by the mother poses no risk to the breastfed infant.
Quoted from Minocycline — Drugs and Lactation Database (LactMed®), National Institute of Child Health and Human Development, revised June 15, 2025.
What LactMed would consider instead
LactMed ends this record by naming the drugs it would consider in place of minocycline. Whether any of them fits depends on what you are treating — this is the database’s list, not a recommendation from us.
How much minocycline gets into breastmilk
Maternal Levels. After a single dose of minocycline 200 mg orally in 2 patients (time postpartum not stated), a peak milk level of 0.8 mg/L occurred at 6 hours after the dose. Average milk levels ranged between 0.5 and 0.8 mg/L during the 12 hours after the dose and a total of 18 mcg was excreted during this time.
Infant Levels. Relevant published information was not found as of the revision date.
What has been seen in breastfed infants
Relevant published information was not found as of the revision date.
Effects on milk supply
A woman taking minocycline 100 mg twice daily for almost 4 years developed galactorrhea after taking perphenazine, amitriptyline and diphenhydramine, and the breast secretion was black in color.
Another woman who had nursed her infant and produced occasional small amounts of breastmilk during the 18 months after weaning was given oral minocycline 150 mg daily. After 3 to 4 weeks, expressed milk had become black. Iron levels in milk were over 100 times greater than that found in normal milk. A mammogram was normal.
In both of these cases, macrophages containing a black, iron-containing pigment were found in milk. It is thought that the pigment is an iron chelate of minocycline or one of its metabolites.
Frequently asked questions
Can you take minocycline while breastfeeding?
What the NIH's Drugs and Lactation Database says about Minocycline while breastfeeding — quoted in full. The full record is quoted on this page, and the decision is one to make with the person who prescribed it — LactMed itself states it is not a substitute for professional judgement.
What can I take instead of minocycline while breastfeeding?
LactMed lists Doxycycline, Tetracycline as alternate drugs to consider. That is the database's own list for this drug — whether any of them suits you depends on what you are treating.
Does minocycline pass into breastmilk?
LactMed's measured drug levels for minocycline are quoted in full on this page, under "How much gets into breastmilk".
Do I need to pump and dump after taking minocycline?
LactMed does not frame its records that way — it reports measured drug levels in milk and what has been observed in breastfed infants, which is what this page quotes. "Pump and dump" advice for a specific drug and dose should come from your clinician or a pharmacist, not from a general rule.
More on minocycline
LactMed states that the information it presents is not a substitute for professional judgement, and that you should consult your healthcare provider for breastfeeding advice related to your particular situation. Nothing on this page is medical advice.