I've noticed, recently, an odd side effect of some of the artificial
sweeteners (AS) I drink coffee all night and tried the different AS
provided...

The weird thing is, both Equal and Splenda leave me going to the
bathroom almost hourly when I get home, Sweet&Low doesn't.

I've never seen this umm... problem(?) mentioned before, so...

4-5 16 oz cups, of a 50/50 mix between decaf and another variety of
coffee, that doesn't change, just the sweetener...