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Is this safe in pregnancy?

Is licorice safe during pregnancy? No — one of the better-evidenced warnings

Medically reviewed by Zeinab Alkashaf · August 11, 2026

Quick answer

No — licorice is best avoided during pregnancy. And this warning differs from many herbal warnings because it is not based on tradition or laboratory studies alone: its active compound, glycyrrhizin, has been linked in human studies that followed children for years to an increased likelihood of preterm birth, and to less favourable outcomes in some aspects of cognitive and behavioural development among children of mothers who consumed large amounts. Added to that is its effect of raising blood pressure, retaining sodium, and lowering potassium — none of which you want to add to a pregnancy. The good news is that Ramadan alternatives are many and safe.

What makes it different from other warnings

Many herbal warnings in pregnancy rest on precaution: it has not been studied, so avoid it. Licorice is a stronger case. Studies in Finland followed women who consumed varying amounts of licorice during pregnancy, and then followed their children into school age and adolescence. In the group with high consumption they observed less favourable results on some measures of memory and attention, alongside a link to preterm birth. This is not a single passing study, and its consistency is what led some health authorities to issue an explicit warning.

The proposed mechanism is also understandable: glycyrrhizin is thought to weaken an enzyme in the placenta whose job is to protect the fetus from excess exposure to the mother's cortisol. When that barrier weakens, the fetus is exposed to higher levels than it should be. Having a plausible explanation alongside the data is what raises confidence in the link.

Where licorice hides

  • The traditional licorice drink — the best known, especially in Ramadan
  • Licorice sweets and imported black candy (licorice / lakrits)
  • Some chewing gums and dark anise-flavoured sweets
  • Herbal mixtures for cough or stomach ulcers — sometimes listed as Glycyrrhiza
  • Some ready-made herbal drinks and blended teas — read the ingredients
  • For Ramadan alternatives: Qamar al-Din, carob, and tamarind in moderate amounts, and water with lemon and mint. And if you use licorice for heartburn or digestive problems, there are safe, well-studied medicines in pregnancy — ask your doctor rather than relying on the herb.

    Myth Licorice is a traditional Ramadan drink known to be good for the stomach, and something people have used for generations cannot harm a pregnant woman.

    Fact Length of use is not evidence of safety, especially in pregnancy. The effects we are discussing here — preterm birth, and developmental differences appearing years later — are precisely the kind that a family or even a community cannot detect by ordinary observation, because they do not follow directly from drinking a cup and do not affect everyone who drinks it. This is exactly what follow-up studies are designed to capture. And a second point: licorice is not forbidden to people in general, and its benefit for the stomach is not an empty claim — but pregnancy is a special state, and the placenta specifically is where the concern lies. Avoiding it for nine months is not a rejection of a beloved tradition, but a postponement of it.

    When to ask your doctor

    Call your doctor if you consume licorice regularly and in large amounts and have just discovered your pregnancy, especially if you have high blood pressure or a history of preterm birth. Also ask if you use a herbal preparation for stomach ulcers or cough — many contain licorice without it being obvious on the front of the pack. Seek prompt assessment if you have a severe headache, swelling, palpitations, or unusual muscle weakness, since low potassium can present that way. And a single cup on an occasion is not cause for worry — the warning concerns regularity and quantity.

    Frequently asked questions

    I drank licorice once or twice in Ramadan — have I harmed my baby?
    The studies raising concern describe regular consumption in large amounts, not an occasional cup. There is no need to worry about once or twice. Stop from now on, and tell your doctor if you have been taking it regularly.
    Do licorice sweets count too?
    Yes, if they contain real licorice extract rather than only artificial flavouring. Imported black sweets often contain glycyrrhizin. Read the ingredients and look for the word licorice or Glycyrrhiza.
    Can I drink licorice while breastfeeding?
    Only in small amounts, and heavy moderation is best. The main concern related to the placenta and pregnancy, but its effect on your blood pressure and potassium still applies to you. Ask your doctor if you take it regularly.

    Sources

    This content is for educational purposes only and is not a substitute for professional medical advice.

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