The purpose of the study: Compare the intensity of the tremor in multiple sclerosis patients receiving Iranian Laveder with placebo. Study design: Randomized, double-blind, placebo-controlled, single-center, phase two trials. The method of study: - Study population:Proven MS patients in the age range 15 to 50 years registered in the Khuzestan MS Community without no Allergy to lavender and any other serious and chronic disease(exeption MS), and no pregnancy or breastfeeding in women. -Sample size:Due to lack of proper estimation of the possible effect of the drug on the results of previous similar studies,the sample size will be determined based on the results of a pilot study. -Intervention study:The study was a randomized controlled clinical trial, patients are devided randomized in to two groups, receiving Lavender or placebo (both medication form and taste are simillar).Each group receives placebo or medication for eight(8) weeks.Immediately before the intervention and after the end of the eighth week,Patients will be evaluated in terms of changes in tremor severity with two types of questionnaire(The tremor part of the MDS-UPDRS questionnaire) and also by the tremor detector (Motion Capture System). -Intervention time:8(eight) weeks -The primary outcome of the study:Finally, by comparing the changes as well as changes in questionnaire and tremor amplitude that would be reported by Motion Capture System (Analysis is based on the tremor research group scale), we will be judged on the effectiveness of the drug and placebo.