Talacen is a prescription drug approved to treat mild-to-moderate pain. This combination medicine comes in the form of a tablet and is taken every four hours on an as-needed basis for pain relief. Although most people tolerate it well, side effects are possible and include constipation, nausea, and drowsiness.
Because it contains pentazocine, Talacen has the potential for abuse and is considered a controlled substance. This means there are strict laws and regulations controlling its possession and use. Talacen is classified as a Schedule IV controlled substance, which has less abuse potential than Schedule II (i.e., morphine) and III (i.e., hydrocodone/APAP) controlled substances.
Pentazocine is also available in combination with naloxone (Narcan®) as the brand-name product Talwin® Nx. Talwin Nx comes as a tablet, and is taken by mouth. Pentazocine is also available alone as an injectable medication, Talwin® (pentazocine lactate).
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Opioid Agonist-Antagonist Analgesics. Drug Facts and Comparisons. Drug Facts and Comparisons 4.0 [online]. 2012. Available from Wolters Kluwer Health, Inc. Accessed December 10, 2012.
Food and Drug Administration, Center for Drug Evaluation and Research. Electronic orange book: approved drug products with therapeutic equivalence evaluations. FDA Web site. Available at: http://www.fda.gov/cder/ob/. Accessed December 13, 2012.
National Library of Medicine (US). Drugs and Lactation Database (LactMED). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?LACT. Accessed December 13, 2012.
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National Library of Medicine (US). Hazardous Substances Data Bank (HSDB). NLM Web site. Available at: http://toxnet.nlm.nih.gov/cgi-bin/sis/htmlgen?HSDB. Accessed December 13, 2012.
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