Please suggest the best otc medicine(s) for sinus symptoms management(esp. the headache) and can be used regularly.

SiNus problem: Benadryl (diphenhydramine) or sudafed can dry your sinuses.

OTC meds for Sunuses: Pseduephedrine (Sudafed) is the main decongestant sold OTC, but due to its potential for abuse, it is now stored behind the shelf and u need to ask for it. It can cause increased heart rate and insomnia. u can use nasal sprays to decongest while avoiding the insomnia caused by oral decongestants. Anti allergy meds can be used if they are adding to the congestion otherwise u can skip these