"An estimated half a million epinephrine autoinjectors are coming off the market. The US Food and Drug Administration (FDA) is advising patients to call their doctor for an alternative, but some say there won't be enough supply to meet the demand."...
Cyproheptadine (cyproheptadine hydrochloride) is a serotonin and histamine antagonist with anticholinergic and sedative effects. Antiserotonin and antihistamine drugs appear to compete with serotonin and histamine, respectively, for receptor sites.
Pharmacokinetics and Metabolism
After a single 4 mg oral dose of 14C-labelled cyproheptadine (cyproheptadine hydrochloride) HCl in normal subjects, given as tablets 2% to 20% of the radioactivity was excreted in the stools. Only about 34% of the stool radioactivity was unchanged drug, corresponding to less than 5.7% of the dose. At least 40% of the administered radioactivity was excreted in the urine. No detectable amounts of unchanged drug were present in the urine of patients on chronic 12-20 mg daily doses. The principal metabolite found in human urine has been identified as a quaternary ammonium glucuronide conjugate of cyproheptadine (cyproheptadine hydrochloride) . Elimination is diminished in renal insufficiency.
Last reviewed on RxList: 4/3/2009
This monograph has been modified to include the generic and brand name in many instances.
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