Butorphanol-containing patch
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Comparison of Analgesia by Intravenous Butorphanol and Meperidine in Patients With Post-Operative Pain
Butorphanol Tartrate
BUTORPHANOL AND SURGERY
A Pharmacokinetic Interaction Study Between Butorphanol and Sumatriptan Nasal Sprays in Healthy Subjects: Importance of the Timing of Butorphanol Administration
Butorphanol (d)