I was prescribed 10mg of Elavil for anxiety. Prozac gave me palpitations & Zoloft (sertraline) made me depressed. Should I try this? I'm so scared of side effects!

Agree with you. You have already had adverse effects from medications far less toxic than Elavil, (amitriptyline) which has substantial anti-cholinergic problems. Sounds like you may benefit from a second opinion regarding all of this.