Is seconol sodium safe for me?

I am a 79 year old male.

After trying sonata, levista, and ambien for insomnia, and none of them working (levista and sonata - I was awake all night. Ambien - 2 hours of sleep only, and later an anxiety attack) my doctor prescribed 100 mg seconal sodium.

I also have been taking xanax. After reading about seconal I am not so sure if I should be taking this drug. Should I discontinue xanax completely before taking it?