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Medicines > classes : Stimulant or Tryptamine or [[:Category:Methylxanthines|Methylxanthine (caffeine)]]

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generic:
brand:
None (67) · Benzedrex (1) · Fioricet, Esgic; with codeine as Fioricet with Codeine (Schedule III) (1) · Fiorinal; with codeine as Fiorinal with Codeine (Schedule III) (1)
classes: (Click arrow to add another value)
mechanism:
5-HT2A agonist (15) · Monoamine releasing agent (8) · Dopamine/norepinephrine reuptake inhibitor (5) · None (2) · Cathinone analogue; monoamine reuptake inhibitor (2) · Dopamine and norepinephrine reuptake inhibitor (2) · Norepinephrine–dopamine reuptake inhibitor (2)
uses:
None (68) · '"`UNIQ--vote-0000159D-QINU`"', '"`UNIQ--vote-0000159E-QINU`"' (1) · '"`UNIQ--vote-000015B6-QINU`"' (1)
starting dose:
None (68) · 1-2 capsules (50 mg butalbital / 325 mg acetaminophen / 40 mg caffeine each) PO every 4 hours as needed; maximum 6 capsules/d (1) · 1-2 capsules (50 mg butalbital / 325 mg aspirin / 40 mg caffeine each) PO every 4 hours as needed; maximum 6 capsules/d (1)
preparations:
None (68) · 50/325/40 mg capsules (1) · 50/325/40 mg capsules and tablets; oral solution (1)
fda max:
None (68) · 6 capsules/d (300 mg butalbital, 1950 mg acetaminophen, 240 mg caffeine) (1) · 6 capsules/d (300 mg butalbital, 1950 mg aspirin, 240 mg caffeine) (1)
routes:
None (68) · Oral (2)
onset:
None (68) · 30-60 minutes (2)
duration:
None (68) · 4-6 hours (2)
halflife:
None (68) · Butalbital ~35 hours (long; cumulative effects with frequent use); acetaminophen 1-3 hours; caffeine 3-7 hours'"`UNIQ--ref-0000159F-QINU`"' (1) · Butalbital ~35 hours; aspirin (acetyl group) ~15 minutes, salicylate 2-3 hours; caffeine 3-7 hours'"`UNIQ--ref-000015B7-QINU`"' (1)
bioavailability:
None (68) · Butalbital well-absorbed; aspirin 50-75%; caffeine ~100%'"`UNIQ--ref-000015B8-QINU`"' (1) · Butalbital well-absorbed; caffeine ~100%; acetaminophen 85-98%'"`UNIQ--ref-000015A0-QINU`"' (1)
pregnancy:
None (68) · Avoided; barbiturate + aspirin teratogenicity and bleeding concerns.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1) · Generally avoided; barbiturate exposure in late pregnancy can produce neonatal withdrawal and respiratory depression.<sup class="pcp-cn" title="This claim needs a citation.">&#91;[[Pharmacopedia:Citation needed|citation&nbsp;needed]]&#93;</sup> (1)
legal:
None (69) · [[USLegal:Schedule III|Schedule III controlled substance]] in US (Fiorinal is scheduled federally; Fioricet with acetaminophen is unscheduled federally despite identical butalbital content, a regulatory quirk) (1)

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