Can Treatment of Fibromyalgia and/or Chronic Pain with Amitryptilne increase Sleep Apnea (AHI)

Amitryptilne is frequently prescribed for treating chronic pain including tension-type headaches, TMJ disorders and fibromyalgia. It is also used to treat mild insomnia and mild sleep apnea. The drug is classified as a tri-cyclic antidepressant but is frequently used off label in low dose therapy.The authors concluded that Amytriptiline increasesAHI or apnea /hypopnea index. This is an