What to do if I have read that endep (amitriptyline) can cause dizziness when headache. Could it be the endep (amitriptyline)?

As side effects. Endep (amitriptyline) is a brand name for amitryptiline, which makes your brain make more use of Norepinephrine and Serotonine. The desired effect is antidepressant and to combat pain. Dizziness and headaches might be side effects.