Pentazocine is used to treat moderate to severe pain.
How Pentazocine works Pentazocine is an opioid analgesic that functions by blocking the transmission of pain signals to the brain, thereby reducing pain perception.
Common side effects of Pentazocine include dizziness, vomiting, nausea, euphoria (a feeling of intense excitement and happiness), and injection site reactions (pain, swelling, redness).