Can I drink apple cider vinegar while pregnant?

The verdict

Split the question in two, because the answers are different.

Apple cider vinegar used as an ingredient, in a dressing, a marinade, a slaw or a sauce, is ordinary food. No national authority restricts vinegar in pregnancy and nobody has ever suggested it should be.

Apple cider vinegar drunk daily as a health measure, usually raw and unfiltered with the cloudy sediment called the mother, is a different proposition. That product is unpasteurised, and unpasteurised is the category the FDA specifically asks pregnant women to avoid. On top of that, none of the claimed benefits have been tested in pregnancy at all.

The pasteurisation question, which is the real one

Most supermarket apple cider vinegar is filtered and pasteurised. It is clear, and it behaves like any other bottled vinegar.

Raw, unfiltered, live or with-the-mother vinegars have not been heat treated. They sit in the same regulatory family as unpasteurised juice and cider, and that family has an explicit pregnancy warning attached in the United States.

The FDA's guidance for pregnant women is to drink only juices that have been pasteurised or otherwise treated to kill harmful bacteria, and to read the label. It explains where the untreated products are found: the refrigerated sections of grocery stores, health-food stores, cider mills and farm markets. In the US such products must carry a warning that the product has not been pasteurised and may contain harmful bacteria that can cause serious illness in children, the elderly and people with weakened immune systems.

Food Standards Australia New Zealand takes the same line from the listeria direction, listing unpasteurised fruit juices among the foods pregnant women should not eat.

How much does the acidity protect you?

This is the honest complication. Vinegar is around pH 2 to 3, which is genuinely hostile to most bacteria, and that is why vinegar has been used as a preservative for thousands of years. A finished vinegar is a much less hospitable environment than raw apple juice.

But no food safety authority publishes an exemption for unpasteurised vinegar on acidity grounds, and there have been documented outbreaks linked to unpasteurised apple products, chiefly cider. The regulators treat the whole unpasteurised category the same way, and that is the position this page reports rather than second-guessing.

The practical version: if you want a vinegar you can stop thinking about, buy a pasteurised one. If you already have raw vinegar in the cupboard and you use a spoonful in cooking, heat resolves it.

What it is supposed to do, and what is actually known

The reasons people start drinking it in pregnancy are usually one of four: heartburn, blood sugar, morning sickness, or general wellness. It is worth taking them separately.

Heartburn. There is no trial evidence in pregnancy. The theory that reflux is caused by too little stomach acid, and that adding acid fixes it, is not the mainstream physiological account. The NHS approach to heartburn in pregnancy is dietary and postural changes first and antacids on advice, and vinegar appears nowhere in it.

Blood sugar. Small studies in non-pregnant people have looked at vinegar and post-meal glucose. None of that work has been repeated in pregnancy, and gestational diabetes is managed with monitoring, diet, and medication where needed. If you have been diagnosed with gestational diabetes, this is a question for your diabetes team, not a substitution to make on your own.

Nausea. No evidence in pregnancy either way. Australia's national service does name ginger and peppermint as teas with some supporting use for nausea, and does not name vinegar.

General wellness. Not a testable claim.

So the position is not that apple cider vinegar has been shown to be useless in pregnancy. It is that it has not been studied in pregnancy, and the studies in non-pregnant people are small and short. Anyone telling you it is proven is overstating what exists.

The cost that is real and often ignored

Enamel erosion is the best-documented harm from drinking vinegar, and pregnancy makes it more relevant, not less.

Repeated exposure to an acid at pH 2 to 3 demineralises tooth enamel, and unlike a cavity, enamel does not grow back. Pregnancy adds two things to this: gums are more prone to inflammation and bleeding, and anyone with morning sickness is already exposing their teeth to stomach acid.

If you are going to drink it, the standard dental advice is to dilute it well in water, drink it through a straw so it bypasses the front teeth, rinse your mouth with plain water afterwards, and do not brush immediately, because brushing softened enamel removes it. Undiluted shots are the worst version of this.

Dental care is free on the NHS while you are pregnant and for a year after your baby is born, which makes a check-up an easy thing to book if you are worried.

Vinegar tablets and gummies

Apple cider vinegar capsules and gummies are food supplements. They are not assessed for use in pregnancy before sale, doses are not standardised between brands, and gummies frequently contain other ingredients, sometimes including added vitamins.

The relevant NHS warning is about vitamin A: it advises not taking supplements containing vitamin A, including high-dose multivitamins and fish liver oils, because too much can harm your baby. If a gummy contains vitamin A or retinol, that is a reason to leave it, independent of the vinegar.

Where guidance differs

Only in emphasis.

The United States is the most explicit about unpasteurised products. The FDA names cider mills and farm markets, tells pregnant women to drink only treated juices, and quotes the mandatory warning label wording.

Australia gets there through listeria. FSANZ lists unpasteurised fruit juices among the foods pregnant women should not eat, without naming vinegar specifically.

The UK says nothing about vinegar. The NHS foods to avoid page does not mention vinegar, pasteurised or otherwise, and it does not have an unpasteurised juice entry either.

No authority endorses a therapeutic dose. There is no national guidance anywhere recommending apple cider vinegar for heartburn, blood sugar or nausea in pregnancy, and this page will not publish a daily amount that no body has set.