Pharmacologic Profile

NAROPIN Delivers Important Clinical Advantages Over Bupivacaine1-6

Because of its Distinctive Pharmacologic Profile...
Unlike bupivacaine, the low lipid-solubility of NAROPIN makes it more selective for C sensory fibers than for A motor fibers7

Compared to bupivacaine...

  • NAROPIN acts directly on unmyelinated C sensory fibers7
  • NAROPIN has less of an affect on the highly myelinated A motor fibers7
  • Consequently, NAROPIN offers a similar sensory blockade but a shorter motor blockade7

NAROPIN is indicated for the production of regional or local anesthesia for surgery and for acute pain management.



References: 1. Beaulieu P, Babin D, Hemmerling T. The pharmacodynamics of ropivacaine and bupivacaine in combined sciatic and femoral nerve blocks for total knee arthroplasty. Anesth Analg. 2006;103:768-774. 2. McGlade DP, Kalpokas MV, Mooney PH, et al. A comparison of 0.5% ropivacaine and 0.5% bupivacaine for axillary brachial plexus anaesthesia. Anaesth Intensive Care. 1998;26:515-520. 3. Scott DB, Lee A, Fagan D, Bowler GMR, Bloomfield P, Lundh R. Acute toxicity of ropivacaine compared with that of bupivacaine. Anesth Analg. 1989;69:563-569. 4. Knudsen K, Beckman SM, Blomberg S, Sjövall J, Edvardsson N. Central nervous and cardiovascular effects of i.v. infusions of ropivacaine, bupivacaine and placebo in volunteers. Br J Anaesth. 1997;78:507-514. 5. Bertini L, Tageriello V, Mancini S, et al. 0.75% and 0.5% ropivacaine for axillary brachial plexus block: A clinical comparison with 0.5% bupivacaine. Reg Anesth Pain Med. 1999;24:514-518. 6. Zaric D, Nydahl P-A, Phillipson L, Samuelsson L, Heierson A, Axelsson K. The effect of continuous lumbar epidural infusion of ropivacaine (0.1%, 0.2%, 0.3%) and 0.25% bupivacaine on sensory and motor block in volunteers: a double-blind study. Reg Anesth. 1996;21:14-25. 7. Hansen T. Ropivacaine: a pharmacological review. Expert Review of Neurotherapeutics. 2004;4:781-791.

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Important Safety Information

Using NAROPIN beyond recommended doses to increase motor block or duration of sensory block may negate its favorable cardiovascular advantages, in the event that an inadvertent intravascular injection occurs.
Like all amide-type local anesthetics, NAROPIN may be associated with adverse reactions. In clinical trials, side effects were mild and transient and may reflect the procedures, patient health status, and/or other medications used. Adverse events reported at a rate of ≥5%: hypotension, nausea, vomiting, bradycardia, fever, pain, postoperative complications, anemia, paresthesia, headache, pruritus, and back pain.

New Safety Information

There have been adverse event reports of chondrolysis in patients receiving intra-articular infusions of local anesthetics following arthroscopic and other surgical procedures. NAROPIN is not approved for this use.

Please see Full Prescribing Information at www.naropin-us.com.



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