[Drug] pentazocine (Talwain) [Kappa (k)] Agonist [Mu (m)] 
Antagonist or Partial Agonist
A n t a g o n i s t
A g o n i s t
W e a k A g o n i s t
P a r t i a l A g o n i s t
A n t a g o n i s t o r P a r t i a l A g o n i s t