Can I take Allegra D OTC 6 days after Rhinoplasty?

There is really no reason that you can't take Allegra after your rhinoplasty procedure.  I would agree that it likely will not help with any nasal congestion you may be having after your procedure.

If you are trying to resolve some postoperative nasal congestion, Allegra D probably won't help a whole lot after your rhinoplasty. However, if you are suffering from allergic rhinitis, the medication may help with nasal itching (pruritis). Your stuffy nose from surgery usually takes a couple of weeks to clear up. Bottom line, you can take the Allegra D without concern about your rhinoplasty results.