There is no evidence to indicate that intermittent intake of moderate amounts of rosemary poses any threat during breast-feeding. However, internal intake of the herb and oil should be avoided during pregnancy because the oil may act as an abortifacient (an agent that may induce an abortion).17
An extract of rosemary taken with a meal by healthy women inhibited the absorption of non-heme iron (e.g., the form of iron in plant foods) by 15%.18 Frequent use of rosemary could, in theory, promote the development of iron deficiency in susceptible individuals.
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The information presented in Aisle7 is for informational purposes only. It is based on scientific studies (human, animal, or in vitro), clinical experience, or traditional usage as cited in each article. The results reported may not necessarily occur in all individuals. Self-treatment is not recommended for life-threatening conditions that require medical treatment under a doctor's care. For many of the conditions discussed, treatment with prescription or over the counter medication is also available. Consult your doctor, practitioner, and/or pharmacist for any health problem and before using any supplements or before making any changes in prescribed medications. Information expires June 2015.