I suspect that this result extends to most painkillers. It was demonstrated before that emotional pain and physical pain are partially regulated by the same mec

I suspect that this result extends to most painkillers. It was demonstrated before that emotional pain and physical pain are partially regulated by the same mechanisms, so painkillers work for emotional pain too (though less effective than specialized drugs) -- which will prevent sharing emotional pain from some situations, which can be reinterpreted as diminished empathy.