Is 80mg of citalopram ok for anxiety disorder?

Probably: Treatment of anxiety disorders often requires much higher dosages of ssris than are used for depression. There are fda warnings about specific cardiac risks with citalopram so just make sure the prescribing physician is monitoring/aware of that.

Not necessarily: The usual max dosage is 40 mg, but if an individual is an ultrarapid metabolizer of cyp450 2c19 or 3a4, higher doses may be required.