Sertraline (Zoloft) Reboxetine (Edronax) Venlafaxine (Effexor) Paroxetine (Paxil) Imipramine (Tofranil) Clomipramine (Anafranil) Amitriptyline Being a central messenger of the “rest-and-digest” system, acetylcholine supports proper gut movement and good digestion. 7) Reducing Pain Some evidence ...