Are nonaddictive, but they can produce some unpleasant physical reactions, including dry mouth, headaches, constipation, nausea, gastrointestinal problems, weight gain, decreased sexual desire, and delayed orgasm.

The correct answer is "antidepressant drugs".
Antidepressants are drugs commonly used to treat depression, anxiety and phobias, and obsessive-compulsive disorders. There are many different types of antidepressants which differ based on their mechanisms. All of them target the serotonergic system of the human brain. They are not considered addictive but they can cause many different negative side effects.