Hmm, what kinds of blisters you have where it requires much force...? Screwing a bottle, especially the child-safe ones the US has, requires a lot more force?

It's usually foil holding in the tablets, a tip I usually use is slightly slicing it with my fingernail and then the tablet just falls out. The only blisters that I've seen that's somewhat difficult would be Mirtazapine orally dissolving tablets, where there's a paper layer on the foil.