Distribution of pentazocine is expected to begin in about a month.
From the time.com
Some examples of these drugs are pentazocine or Talwin, nalbuphine or Nubain, and butorphanol or Stadol.
From the abcnews.go.com
Other research publications have concluded that women with naturally red hair require less of the painkiller pentazocine than do either women of other hair colors or men of any hair color.
From the en.wikipedia.org
The only drug which cannot be addictive will be one which has no perceptible effects, or which can actually make you feel bad, such as the painkiller pentazocine.
From the newscientist.com
More examples
Analgesic drug (trade name Talwin) that is less addictive than morphine
Pentazocine is a synthetically-prepared prototypical mixed agonist-antagonist narcotic (opioid analgesic) drug of the benzomorphan class of opioids used to treat moderate to moderately severe pain. ...