You are usually on the mark, but your comment is wrong.
<The two drugs are used differently. Relistor is used to induce relatively quick bowl movement while NKTR118 is to make people who take opiate on regularly basis to have regular bowl movement.>
Yes, Relistor is currently approved only for advanced medical illness. PGNX is in the process of getting approval for usage in patients who regularly take opiates for chronic pain. The NKTR drug isn't approved for any indication.