<unk>  is an N-type calcium channel antagonist that is FDA approved for the {{{indicationType}}} of severe chronic pain in patients for whom intrathecal therapy is warranted, and who are intolerant of or refractory to other treatment, such as systemic analgesics, adjunctive therapies, or intrathecal morphine. There is a Black Box Warning for this drug as shown here.  Common adverse reactions include dizziness, nausea, confusional state, nystagmus.
Ziconotide
Pasireotide
Meclizine
Cilansetron
Moricizine
Etelcalcetide
Dolastetron 
Granisetron 