Female orgasm and medicines

My wife has been taking anti-anxiety medications which have severly inhibited her ability to have an orgasm. Is there anything that can be done about this short of discontinuing the meds? (ie. are there counter-mdeications available?)

Are you referring to SSRI medication? They can make orgasm difficult. There are alternative medicines which may not have this effect, see this article.

In general, I would recommend psychotherapy rather than medicines for anxiety. Good psychotherapy is often very effective against anxiety and does not have the side effects of medicines.