en دراوسازی سنتی Tradiational Pharmacy پژوهشي Original Research Hemodialysis patients experience debilitation in spite of the improvement of dialysis techniques. Impaired functioning, well-being and quality of life in these patients are of a great concern<strong>. </strong>The current study is intended to examine the effects of lavender essential oil on well-being in hemodialysis patients. This randomized clinical trial was conducted on thirty hemodialysis patients. In &nbsp;experimental group a cotton ball soaked in two drops of lavender essence, diluted with sweet almond oil, at concentrations of 10% ( week 1), 20% ( week 2), 30% ( week 3), 40% ( week 4) and 50% ( week 5) was to be pinned on the patients&#39; collar for five consecutive weeks. Patients were asked to breathe normally for 20 minutes. The control group received only routine nursing care. The perceived sense of well-being was measured in both groups at the end of each week using a visual analog scale. The mean age of patients was 58.9<span dir="RTL">&plusmn;</span>14.31 years for the experimental group and 53.03<span dir="RTL">&plusmn;</span>15.84 years for the control group. Hypertension was reported to be the most common underlying disease in both groups. The results showed that the mean of well-being differed significantly between before the intervention and four and five weeks after the intervention in the experimental group. Inhalation aromatherapy with lavender essence 40% and 50% seems to have a positive effect on the perceived sense of well-being in hemodialysis patients while lower concentrations of 10%, 20% and 30% do not appear to have the same effect. lavender, aromatherapy, well-being, hemodialysis 18 22 http://pbr.mazums.ac.ir/browse.php?a_code=A-10-432-1&slc_lang=en&sid=1 Masoumeh Bagheri-Nesami معصومه باقری نسامی anna30432003@yahoo.com 10031947532846003697 10031947532846003697 Yes Traditional and Complementary Medicine Research Center, Addiction Institute,Mazandaran University of Medical Sciences, Sari, Iran دانشگاه علوم پزشکی مازندران Seyed Afshin Shorofi سید افشین شروفی ashorofi@yahoo.com 10031947532846003698 10031947532846003698 No Adjunct Research Fellow, Flinders University, Adelaide, Australia دانشگاه علوم پزشکی مازندران Attieh Nikkhah عطیه نیکخواه Atinik1357@gmail.com 10031947532846003699 10031947532846003699 No Traditional and Complementary Medicine Research Center, Addiction Institute, Mazandaran University of Medical Sciences, Sari, Iran دانشگاه علوم پزشکی مازندران Hossein Roohi Moghaddam حسین روحی مقدم h.rohi1980@gmail.com 10031947532846003700 10031947532846003700 No Nursing and Midwifery School, Mazandaran University of Medical Sciences, Sari, Iran دانشگاه علوم پزشکی مازندران Ali Mahdavi علی مهدوی mahdavi.ali7@gmail.com 10031947532846003701 10031947532846003701 No Nursing and Midwifery School, Mazandaran University of Medical Sciences, Sari, Iran دانشگاه علوم پزشکی مازندران