Umm... putting this out into the world hoping it catches and someone down the line does something about it.
My friend was taking seasonal allergy meds - over the counter - Singulair specifically...
...and it caused massive brain issues with him. So much so it caused mental instability and has directly lead to his divorce. (He had to check himself into a mental institution for over a month and they sorted out that the allergy meds was a core part of the problem - The leadup and then the checkin broke their decades long relationship).
Since he has gotten off the allergy meds, his brain is great! His life is in ruins, but he can at least sort out whats going on.
You remember my brain issues? A lot went into it... One aspect was burnout leading to glucose depletion, but another core part was I was taking an over the counter seasonal allergy med. In my case it was Xyzal.
I stopped taking it... and SO MANY OF MY FUCKING BRAIN ISSUES WENT AWAY!!!!
I had sorted out the burnout, rested, and healed. And that took care of many of my symptoms. But I still had lingering issues. Lack of comprehension, lack of being able to speak, mental fatigue / severe brain fog / to the point that I had a hard time processing when people were speaking or reacting to me.
I can think now. I can actually accomplish stuff.
Seasonal allergy meds... even over the counter... cross the blood brain barrier (and neurodivergent folks often have a... more permeable blood barrier from what i hear... verify this one though) . Seasonal allergy meds can FUCK you up. Especially if taken daily.
I swear, this and microplastics are our generation's lead poisoning.