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Serum Concentrations of PRL, GH, LH, FSH, TSH and Cortisol After Single Administration to Man of a New Synthetic Narcotic Analgesic Butorphanol

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Specialty Pharmacology
Date 1984 Jan 1
PMID 6432552
Citations 1
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Abstract

The i.m. administration to 6 healthy adult male volunteers of 2 mg butorphanol, a potent synthetic opiate analgesic, resulted in a significant rise in serum PRL level, without affecting GH, LH, FSH, TSH or cortisol secretion. These effects indicate that in man butorphanol exerts an opiate agonist rather than an opiate antagonist effect at the hypothalamic and/or pituitary level.

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