(1) Objectives: The study aims to compare the effects of Chamomile, Ginger and Vitamin B6 on nausea and vomiting during pregnancy, (2) Design: This triple-blind randomized trial includes 105 pregnant women in 6-20 weeks of gestational age who suffer from weak or moderate nausea and vomiting, who will attend the Health Centers in Qazvin city, Iran, between2015-2016, (3) Setting and Conduct: the researcher will go to Health Centers every day and apply randomized sampling between pregnant women with gestational age 6-20 weeks who suffer from mild or moderate nausea and vomiting. The Subjects will be selected randomly and divided into three groups of 35 patients including intervention group1 (green balls), intervention group2 (blue balls) and intervention group3 (red balls), (4) Major eligibility criteria: Participants are pregnant women with single fetus 6-20 weeks who suffer from mild or moderate nausea and vomiting induced by pregnancy. The following will be excluded fro the study: women with severe nausea and vomiting who will be needed to be hospitalized and those who will be allergic to Ginger, (5)Intervention and experiment : Ginger capsules were given to group 1, , Chamomile capsules were given to group 2, and vitamin B6 were given to group 3, the participants used them for 4 days. Then Rhodes index questionnaire was given to all participants to be completed before and after intervention, (6) Main outcome measures: Intensity and the number of times participants will experience nausea and vomiting before and after intervention will be measured.