Frequent sinus infections! need otc treatment?

Limit exposures: Several things contribute to chronic sinus problems. Most issues are not truly infections, but usually more congestion. Avoid smoking and smoke exposure, explore allergies, consider nasal saline irrigation, and avoiding dairy products for 2 weeks (most adults have some version of milk allergy).Sometimes, recurrent issues can be from lacking some immunologic factors(iga, etc) may help identify.