the "d" in allegra d is a decongestant that cause drainage especially if you take it near bedtime. the antihistamine component in allegra is fine at bedtime so you may want to consider losing the "d" at bedtime. a z-pack (azithromycin) is compatible with this medication.
can u take allegra d while taking z pack. doctor says i have bronchitis he gave me a z pack. can't sleep cus of drainage. possible allergies.