I have had right sided tinnitus for over 4 months. I have seen ENT, audiology , MRI etc. There are no reasons found for the tinnitus. I am partially habituated but it can lead to loss of sleep at night. However, I get pollen allergies at about this time of year and start taking antihistamine - ceterizine is the one I take and is OTC. I noticed the tinnitus was getting worse recently and 2 nights ago I started taking the antihistamine in the evening. Within 3 hours the tinnitus had subsided and I had a good night's sleep. I noticed that tinnitus was present the next morning but at a low level. I repeated the dose the next evening and the same relief occurred.
I have read up on the effect of antihistamine on tinnitus. Apparently there are 2 types, 1 and 2. Type one has a more systemic affect and is known to cause tinnitus in some cases but type 2 (the one I am using) helps inflammation in mucous membranes and secretions so could affect inner ear issues. The evidence is very sketchy but I will see if there is a continued beneficial affect over time.
I should point out that my ear does feel partly blocked at times and I note others report this feeling. I was prescribed fluticasone nasal spray to reduce inflammation but had no effect. This went away when I started using the antihistamine so this might indicate some kind of change in the ear. I wonder if anyone else has tried using antihistamines and if so which type and were there any benefits noted.