Nutritional Supplement

Rosemary

Side Effects

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).14

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%.15 Frequent use of rosemary could, in theory, promote the development of iron deficiency in susceptible individuals.

References

1. Huhtanen C. Inhibition of Clostridium botulinum by spice extract and aliphatic alcohols. J Food Protect 1980;43:195-6.

2. Aqel MB. Relaxant effect of the volatile oil of Rosmarinus officinalis on tracheal smooth muscle. J Ethnopharmacol 1991;33:57-62.

3. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Foods, Drugs, and Cosmetics, 2d ed. New York: John Wiley & Sons, 1996, 446-8.

4. Singletary K, MacDonald C, Wallig M. Inhibition by rosemary and carnosol of 7,12-dimethyl-benz [a]anthracene (DMBA)-induced rat mammary tumorigenesis and in vivo DMBA-DNA adduct formation. Cancer Lett 1996;104:43-8.

5. Forster HB, Niklas H, Lutz S. Antispasmodic effects of some medicinal plants. Planta Med 1980;40:303-19.

6. Blumenthal M, Busse WR, Goldberg A, et al. (eds). The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Austin: American Botanical Council and Boston: Integrative Medicine Communications, 1998, 425-6.

7. Weiss RF. Herbal Medicine. Beaconsfield, UK: Beaconsfield Publishers Ltd, 1988, 185-6.

8. Blumenthal M, Busse WR, Goldberg A, et al. (eds). The Complete German Commission E Monographs: Therapeutic Guide to Herbal Medicines. Austin: American Botanical Council and Boston: Integrative Medicine Communications, 1998, 198.

9. Felix W, Schmidt Y, Nieberle J. Protective effect of Ruscus extract against injury of vascular endothelium and vascular smooth muscle caused by ethracrynic acid. Int Angiol 1983;3:77.

10. Castleman M. The Healing Herbs. New York: Bantam Books, 1991, 452-6.

11. Weiss RF. Herbal Medicine. Beaconsfield, UK: Beaconsfield Publishers Ltd, 1988, 185-6.

12. Leung AY, Foster S. Encyclopedia of Common Natural Ingredients Used in Foods, Drugs, and Cosmetics, 2d ed. New York: John Wiley & Sons, 1996, 446-8.

13. Blumenthal M, Busse WR, Goldberg A, et al., eds. The Complete Commission E Monographs: Therapeutic Guide to Herbal Medicines. Boston: Integrative Medicine Communications, 1998, 197.

14. Newall CA, Anderson LA, Phillipson JD. Herbal Medicine: A Guide for Health-Care Professionals. London: Pharmaceutical Press, 1996, 229-30.

15. Samman S, Sandstrom B, Toft MB, et al. Green tea or rosemary extract added to foods reduces nonheme-iron absorption. Am J Clin Nutr 2001;73:607-12.

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The information presented by TraceGains 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. 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 December 2024.