Welcome to NeuroTalk:
This is a drug that has been on the market for a while for severe pain. It is a distant cousin of Tramadol.
http://www.jnj.com/connect/news/all/...alexia-palexis
From the posts I've seen, there are people who do not find this drug very helpful for severe pain.
More here on its history and actions:
http://en.wikipedia.org/wiki/Tapentadol
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Weezie looking at petunias 8.25.2017
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