Can you take Sudafed and aspirin on the same day?

It all depends on the main ingredient in the Sudafed you are purchasing. The regular Sudafed which contains pseudoephdrine is safe to take with Dayquil. The Sudafed PE, which is now being sold can not be taken with Dayquil since Dayquil contains the same decongestant, phenylephrine as Sudafed PE.