We use a 12 hour over the counter decongestant nasal spray that has Oxymetazoline Hydrochloride 0.05 percent in it, so can be used 2 times a day for 3 days. I've bought it at Kroger's and Target, but most any such store should carry it.

When I was in my 20's I went to a well known ENT only to have him tell me I did not have sinus issues. I started crying right then and there because I was so sick of the pressure in my head and the headaches. Right up to the age of 48, I would asked the doctors to check my sinuses, they would look in my nose and say there were no issues. I thought, for sure they were going to find something in the contrasted MRI I had which would show those doctors how wrong they were. Finally, when I was diagnosed with Fribo, I realized what was really going on with my sinuses.....absolutely nothing. It was all caused from the Fibro. Unfortunately along with the "non-sinus" issues, my ears feel like I have fluid swishing around in there.

I read that taking antibiotics for supposed sinus infections can then cause a fungal response. The Mayo clinic in the U.S. says that about 95% of sinus infections are fungal instead of bacterial, so antibiotics only make the sinuses worse. Years ago, I had about 4 sinus infections a year, over a period of a few years, until a wise Dr. gave me a prescription by mouth, to combat the fungus in my sinuses and body. I haven't had a sinus infection in about 15 years.
My left facial sinuses will from time to time flare up with some inflammation, possibly due to FM, and a Dr. told my adult daughter to use a nasal spray decongestant, 3 puffs in each nostril, once a day, for three days, then stop to not get a rebound effect, and it works for me also.

I have chronic sinusitus and allergies so have this alot. Interesrting article

I’ve had chronic sinusitis for years, my ENT wants me to have surgery. A few years ago the drainage down my throat was really bad and Claritin D wasn’t helping. I started researching LPR, I had a Nasal endoscopy, sure enough, I had LPR along with sinusitis 🙁 I changed my eating habits, it help a lot not eating 3 hours before I go to bed. So if you have a lot of mucus in your throat, or an unexplained sore throat, research LPR.