Acetaminophen (Tylenol) reduces empathy?

I don't know about the credibility of this journal and I can only access the abstract. It's an interesting study, but obviously one study by itself is in no way conclusive. Could there be anything to this? It's certainly disturbing if true.
http://ift.tt/29rjyc3

Quote:

In two double-blind placebo-controlled experiments, participants rated perceived pain, personal distress and empathic concern in response to reading scenarios about another's physical or social pain, witnessing ostracism in the lab, or visualizing another study participant receiving painful noise blasts. As hypothesized, acetaminophen reduced empathy in response to others’ pain.

via International Skeptics Forum http://ift.tt/29cQNOM