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Ginger Side Effects, Interactions and Warnings



  • Heartburn or stomach distress can occur if taken in large quantities.
    - Murray, M. -- The Pill Book Guide to Natural Medicines: Vitamins, Minerals, Nutritional Supplements, Herbs, and Other Natural Products. -- Bantam, 2002. 664.

  • Ginger reinforces warfarin action by heterogeneous mechanisms. It should thus not be used in patients on oral anticoagulant and/or antiplatelet therapy.
    - Oral anticoagulants and medicinal plants. An emerging interaction -- Argento A, Tiraferri E, Marzaloni M. -- Ann Ital Med Int. 2000 Apr;15(2):139-43.

  • Ginger may increase the risk of bleeding or potentiate the effects of warfarin therapy.
    - Am J Health Syst Pharm 2000 Jul 1;57(13):1221-7; quiz 1228-30 -- Potential interactions between alternative therapies and warfarin. -- Heck AM, DeWitt BA, Lukes AL.

  • This study investigated the effect of ginger, a common morning sickness remedy, on fetal development. Pregnant Sprague-Dawley rats were administered, from gestation day 6 to 15, 20 g/liter or 50 g/liter ginger tea via their drinking water and then sacrificed at day 20. No maternal toxicity was observed, however embryonic loss in the treatment groups was double that of the controls (P<0.05). No gross morphologic malformations were seen in the treated fetuses. Fetuses exposed to ginger tea were found to be significantly heavier than controls, an effect that was greater in female fetuses and was not correlated with increased placental size. Treated fetuses also had more advanced skeletal development as determined by measurement of sternal and metacarpal ossification centers. The results of this study suggest that in utero exposure to ginger tea results in increased early embryo loss with increased growth in surviving fetuses.
    - Reprod Toxicol 2000 Nov-Dec;14(6):507-12 -- Effect of ginger tea on the fetal development of Sprague-Dawley rats. -- Wilkinson JM.

  • Ginger may help to lessen nausea due to chemotherapy drugs and anesthesia.
    - Murray, M. -- The Pill Book Guide to Natural Medicines: Vitamins, Minerals, Nutritional Supplements, Herbs, and Other Natural Products. -- Bantam, 2002. 664.








last update: February 2014



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