FORUM › Forums › Mirtazapine › Mirtrazapine myth Tagged: Mirtazapine gain weight myth This topic contains 1 reply, has 2 voices, and was last updated by medicalguru 4 days, 7 hours ago. Viewing 2 posts - 1 through 2 (of 2 total) Author Posts April 14, 2019 at 9:05 pm #152 maria111Participant Hello, I heard of a myth that mirtazapine can cause a person to gain weight. Is this true and justified? April 14, 2019 at 9:09 pm #154 medicalguruModerator Hello, Mirtazapine can make you feel more hungry than usual, so you may put on weight. If you start to have problems with your weight while taking mirtazapine, talk to your doctor or pharmacist. Author Posts Viewing 2 posts - 1 through 2 (of 2 total) You must be logged in to reply to this topic.