I've been researching these 4 supplements and the subtle differences is driving me insane, especially when sleep deprivation my 2 year puts me through is pouring gasoline right into my brain fog / anxiety fire. I'm looking for a supplement that improves the intestinal barrier (reduces intestinal permeability) and also reduces nasal stuffiness through the same action (I believe by improving mucosal lining defense). For some strange reason my nose has been stuffed up for 20 years since the very week I started having intestinal symptoms. If it can also reduce brain fog and anxiety that would be a bonus too. Am I asking too much for wanting to take one of these for this purpose? I'm a "try just one supplement for a month and see what happens type of guy".