I just read an article about that kind of shut-down response, which is due to high levels of opioid extended release meds. For women it seems not quite as much study has been done but, they suggested the best results so far has been from the supplement DHEA. It is available in any health food store, most grocery stores and literally all pharmacies. Of course, take it as directed or you'll end up with a low voice and growing a beard.
I'd have to dig up the article again (if I can even find it) to tell you what the Men's treatment was....
I added this DHEA about 2 weeks ago to my normal daily meds has I do believe there's been improvement
There was no mention about any of this type of side effect from a stimulator. It seems that it is just another one of those "little" side effects of the actual pain meds that doesn't get addressed.
Hope this helps.