The very first night I took the montelukast pill, I slept like a log and did not breathe with my mouth open which I've done since I was a teenager). I was breathing through my nose all night long and woke up so refreshed! Within 2 weeks of starting the montelukast & cetirizine pills (1 each at bedtime), I had regained my speed of walking to a normal pace ... after 13 months of walking like a 90-year-old zombie wearing lead boots in the mud!

My vision was still "off". I didn't see correctly. Everything still LOOKED wrong to me. I was walking faster and appearing more normal outwardly, but inside my own head, things were not right yet. I was still having such vertigo, especially when I would walk into stores where there are fluorescent lights, reflective white tile floors, and so much visiual stimuli as I looked up and down aisles and shelves. When I explained this to my immunologist, he added that 2nd nasal spray (Azelistine / asteline). It took about 1-2 weeks of taking this before I started to come out of my nearly 14-month covid brain fog/vertigo/weird vision symptoms. Then, I finally began FEELING almost like my old self again! I can now go into stores without feeling so exhausted, or getting tremors, or getting hit with such horrible vertigo that I have trouble looking from my grocery cart to the checkout while I load my groceries.

Here is my daily regimen:
In the morning, I use my OTC NeilMed sinus rinse. Then, I use 2 sprays in each nostril of the Azelistine (Rx). After work, I use 2 sprays in each nostril of OTC fluticasone (Flonase). At bedtime, I use 2 sprays in each nostril of the Azelistine again. And I take my two pills: one OTC cetirizine (Zyrtec) and one Rx montelukast (Singulair).

I hope that helps you like it has helped me!