anxiety
"For two years, I have had chronic nausea that starts about an hour after waking up and lasts through mid afternoon. It is so bad I usually have to skip lunch. For various reasons, I believed it was anxiety-related, and after some research, asked my doctor if I could try mirtazapine due to its anti-anxiety, antiemetic, and appetite-stimulating properties. I could not be happier! The nausea was better the first day after taking it, and within two or three days was totally gone. I finally have my appetite back, too. I don't know that I'd recommend this medicine to people who are overweight, but for those who can afford or even want to gain weight it can be a lifesaver!"