Is mint safe while breastfeeding? With caution — large amounts may reduce supply
Medically reviewed by Zeinab Alkashaf · August 12, 2026
Quick answer
With caution — mint is not forbidden while breastfeeding, but it is no longer uncounted as it was in pregnancy. An ordinary cup now and then makes no meaningful difference for most women, but large, regular amounts may reduce milk supply — a reversal from the previous stage, when mint was among the safe, comforting drinks for nausea. Note that the effect varies a great deal between women: many drink it daily with no change at all. The practical rule: if your breastfeeding is well established there is no need to cut it out, and if you already struggle with low supply, reduce it and watch. Caution is stronger with concentrated peppermint oil.
How large is the effect, really?
It is honest to say this is not an effect proven by large studies, but a repeated observation and firmly held traditional knowledge: mint and sage are named together among herbs that may reduce supply, which is why they are sometimes suggested during weaning or with oversupply and engorgement. For most women the effect is small or unnoticeable at ordinary amounts, and it tends to show with heavy consumption — several cups a day, or extracts and oils.
The practical meaning is that you do not have to remove mint from your life. But if you are in the early weeks while supply is still establishing, or you are working on increasing it, it makes sense not to add a factor pulling the other way.
An occasional cup of mint: no problem for most women
Several cups daily on a regular basis: reduce if you struggle with low supply
Concentrated peppermint oil or supplements: stronger caution — ask your doctor
Mint balms or oils on the nipple or breast: avoid — they can reach the baby's mouth directly, and peppermint oil is not placed near an infant's face
Mint sweets and chewing gum: tiny amounts, not practically counted
If you are deliberately weaning or dealing with engorgement and oversupply: here mint becomes useful rather than a worry
Myth Mint cuts off milk immediately — a single cup could end your breastfeeding, so remove it entirely from day one.
Fact This is an exaggeration that causes needless anxiety. The observed effect is gradual and dose-related, not a switch that shuts supply off. A cup of mint after lunch will not end your breastfeeding, as evidenced by the millions of women who drink it and feed without issue. The irony is that the fear may do more harm than the herb: constant tension and anxiously monitoring everything that enters your mouth make the breastfeeding experience far heavier than it needs to be. The balanced position: watch large amounts, especially in the early weeks or while working on supply, and do not deny yourself a cup you enjoy.
When to ask your doctor
Ask your doctor or a lactation consultant if you notice supply dropping while drinking a lot of mint — the connection may be right, or the cause may be something else entirely that deserves checking. Also ask before using peppermint oil or supplements. And see your paediatrician if your baby is not gaining weight or has few wet nappies — these are the real indicators of sufficiency, and far more meaningful than how full your breasts feel. Remember too that other common factors reduce supply: returning to work and spacing feeds, contraceptive pills containing oestrogen, or severe exhaustion. Review the whole picture before blaming a cup.
Frequently asked questions
How many cups of mint can a breastfeeding mother drink?
There is no definitive number, and the effect varies a lot between women. An occasional cup makes no difference for most. If you drink several cups daily and struggle with supply, cut back and watch for a week.
Why was mint safe in pregnancy and cautioned now?
Because what is being measured changed. In pregnancy the question was whether it harms the baby, and the answer was no. Now the question is whether it affects milk supply, and there is a repeated observation that large amounts may reduce it. Safety for you and your baby is not in doubt.
Can I use a mint balm or oil on my nipple?
Best avoided. Concentrated oils can reach the baby's mouth directly, and peppermint oil is not placed near an infant's face. If you have cracked or painful nipples, ask a lactation consultant to assess the latch — pain is usually a sign of something fixable.
Dawrat Hayat