Is nortriptyline a barbituate?

Nortriptyline is an antidepressant from the tricyclic antidepressant class. (Trade name originally was Pamelor). In low doses it is used as an adjunctive treatment for chronic pain, including...

Phentermine is in the amphetamine and phenethylamine class of drugs.

no, it is an anti-inflammatory/muscle relaxer

No. Hydrocodone is semi-synthetic opioid.

Nortriptyline belongs to a class of medications called tricyclic antidepressants. It is not entirely clear how the medication works. However, it does affect several chemicals in the brain, including...