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The Society of Obstetric Medicine of Australia and New Zealand (SOMANZ) have recently released new guidelines which encompass the role of diet and supplementation in women suffering from nausea and vomiting in pregnancy, also called NVP.

The 2019 SOMANZ guidelines that relate to diet include:

  • Discontinue prenatal multivitamin tablets if they are contributing to nausea: the two critical micronutrients which should be continued if at all possible are Iodine (150μg a day) and Folate (at least 400μg a day).

  • Eating small but frequent meals may help.

  • Having lots to drink to avoid lack of fluid or dehydration may help. Drinking little and often, rather than large amounts, may help to prevent vomiting.

The guidelines continue to recommend supplements with both Folic Acid and Iodine.

However, SOMANZ and the Department of Health recommend discontinuing multivitamin supplements with a high Iron content if suffering from nausea and vomiting.

One study found 45% of pregnant women in Australia are taking supplements containing high levels of Iron between 30 and 99mg per day. Taking a pregnancy nutrition supplement, like the MamaCare Nutritional Supplement, with a more moderate amount of Iron may be worth trialing for women who cannot get enough Iron from their diet or have been diagnosed with Iron deficiency or anaemia. MamaCare, a food-based pregnancy supplement, can be trialed as it contains a moderate amount of Iron in a form that is milder on the gastrointestinal tract and may be better tolerated.


  1. Society of Obstetric Medicine of Australia and New Zealand.

  2. Department of Health. Pregnancy Care Guidelines.

  3. Chatterjee R, Shand A, Nassar N, Walls M, Khambalia AZ. Iron supplement use in pregnancy–Are the right women taking the right amount?