I don't know about others and I may be wrong in my thinking but when I am not feeling well rules go out the window
I have been fighting a summer cold the last week or so and have been taking paracetamol, Nurofen and Lemsips. TBH they have not affected my BS to much I think it's more a case of feeling run down a bit that raised them a little higher than my norm. I dare say others will have there own way of doing things. I now feel better than I did so it worked for me. I hope you find what works for you.
I apologise to any Type 1's or Type 2's who are insulin dependant if my reply seems a bit frivolous as I know your needs are allot different and you have to manage your dosages as well.