Which of the following is an appropriate recommendation for a pharmacist to provide to a patient regarding chronic allergic rhinitis from multiple environmental triggers?

One appropriate recommendation for a pharmacist to provide to a patient regarding chronic allergic rhinitis from multiple environmental triggers is to use zippered, allergen-proof casings for mattresses and pillows. This is because these casings can help prevent dust mites and other allergens from accumulating in the bedding, which can help reduce symptoms of allergic rhinitis. Option A, using oxymetazoline nasal spray, may provide temporary relief of nasal congestion but does not address the cause of the allergic rhinitis. Option C, opening windows, may actually exacerbate symptoms for someone with allergies as it can increase exposure to allergens. Option D, taking ibuprofen with pseudoephedrine, may help with congestion and headaches but does not address the underlying issue of exposure to environmental triggers.