It is supplied as tablets or injection. Amitriptyline is an antidepressant medicine that belongs to a group of medicines called the tricyclic antidepressants.
Depression is an illness characterised by a low mood and a reduced ability to enjoy life.
In some patients with depression, low levels of brain chemicals called neurotransmitters may relate to their depression. Amitriptyline is thought to improve mood by raising the level of neurotransmitters in brain tissue.