Does beconase nasal spray (beclometasonr dipropionate) and benylin (guaifensin & pseudoephedrine) cough mixture interact with each other?

No problems: No there is no interaction. It is fine to use them together.

No: It is safe to take Beconase nasal spray (beclometasone dipropionate) and Benylin (Guaifensin & Pseudoephedrine) cough mixture at the same time. You can also take Tylenol (acetaminophen) and/or Ibuprofen as needed for discomfort while taking these medications. You should not take Ibuprofen or other nonsteroidal anti-inflammatory drugs (NSAIDs) while taking Prednisolone. Rest & Drink plenty of fluids.

Allergic rhinitis: They do not interact. Both are commonly used for allergic rhinitis.

Not likely: Steroid nasal sprays work locally and there is some systemic absorption (varying from 1% -17%). There are no known interactions between these medicines.