What is the difference between oxazepam and temazepam? Which would be btter to treat insomnia in a?

Both Oxazepam and temazepam belong to a group of drugs called benzodiazepines.
Benzodiazepines are usually prescribed as a sedative or to relieve anxiety. They are a depressant, which means they help slow the body's system down and have sleep inducing properties.
Both drugs are similar in their duration of action and side effects etc.
Temazepam is probably more commonly used than oxazepam.

I have taken both medications. Being younger, oxazepam has worked better for me. Temazepam was perscribed to me in my adolescent years- oxazepam has effects on the respiratory system (slows down breathing) more than temazepam. I would reccomend using temazepam given your age, its sedative properties are still very effective.