Can i use nasacort (triamcinolone) more than once a day? what is the safest maximum dosage?

Four times a day : The recommended starting dose of nasacort (triamcinolone) nasal inhaler is 220 mcg per day given as two sprays (55 mcg/spray) in each nostril once a day. If needed, the dose may be increased to 440 mcg per day (55 mcg/spray) either as once-a-day dosage or divided up to four times a day, i.e., twice a day (two sprays/nostril), or four times a day (one spray/nostril).

No: It's prescribed as a single daily dosing, 2 sprays per nostril once daily. I've encountered an occasional dosing of twice daily for up to three days, then once daily maintenance dosing. This latter is particularly helpful for acute exacerbations of allergic rhinitis.