IRCT201605026888N15 IRCT 2016-07-06 Vice Chancellor for Research and Technology Hamedan University of Medical Sciences The effect of aromatherapy lemon on nausea and vomiting of pregnancy in pregnant women referred to health centers effect Lemon aromatherapy on nausea and vomiting in pregnancy The effect of aromatherapy lemon on nausea and vomiting of pregnancy in pregnant women referred to health centers 2016-07-22 anticipated 96 Complete https://irct.ir/trial/7326 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Not used, Assignment: Parallel, Purpose: Treatment. N/A Nausea and Vomiting. Intervention 1: Intervention Group:After obtaining informed consent from participants, For four days and each day as soon as nausea and vomiting by mother, two drops of lemon at a concentration of 2% of the company Barij Esans poured onto a clean tissue Three takes a deep breath and, if necessary, be repeated every five minutes and Per day once the questionnaire is completed by the cases.. Group control: For four days and each day as soon as nausea and vomiting by mother, two drops of placebo solution that is in the same container of lemon poured onto a clean tissue Three takes a deep breath and, if necessary, be repeated every five minutes. Intervention 2: Control group: After obtaining informed consent from participants, Mothers controlled group placebo(water) to be delivered within the bottle similar to the intervention group.For four days and each day as soon as nausea and vomiting by mother, Two drops of the contents of the glass poured onto a clean tissue Three takes a deep breath and, if necessary, be repeated every five minutes and Per day once the questionnaire is completed by the control group.