Drilldown: Medicines
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brand:
classes:
mechanism:
None (1) ·
Caffeine + theophylline + L-theanine. L-theanine (an amino acid unique to tea) modulates glutamate and produces an 'alpha-wave' calming overlay on caffeine's stimulation, hence tea's reputation as a 'cleaner' stimulant than coffee. (1) ·
Caffeine is a non-selective adenosine A1/A2A receptor antagonist; also weak PDE inhibition. Beans contain theobromine (3,7-DMX) and theophylline (1,3-DMX) in smaller amounts. (1) ·
'"`UNIQ--vote-00000054-QINU`"' The clinical efficacy endpoint is adequate visualization at colonoscopy, scored by the Boston Bowel Preparation Scale'"`UNIQ--ref-00000055-QINU`"'. (1)
uses:
'"`UNIQ--vote-00000015-QINU`"', '"`UNIQ--vote-00000016-QINU`"' (1) ·
'"`UNIQ--vote-00000056-QINU`"', '"`UNIQ--vote-00000057-QINU`"' (1) ·
'"`UNIQ--vote-000000CF-QINU`"', '"`UNIQ--vote-000000D0-QINU`"', '"`UNIQ--vote-000000D1-QINU`"' (1) ·
'"`UNIQ--vote-00000747-QINU`"', '"`UNIQ--vote-00000748-QINU`"' (1)
starting dose:
4 L oral solution (GoLYTELY-class) split-dose: 2 L evening before, 2 L morning of procedure; low-volume products (MoviPrep, Plenvu) use 1-2 L with required clear-fluid intake (1) ·
One cup (~40–60 mg caffeine; about half of brewed coffee) (1) ·
One cup (~80–145 mg caffeine for brewed; 60–100 mg for instant) (1) ·
Oral: 1500 mg PO QID for 2-3 days (load), then 750-1500 mg QID maintenance. IV/IM: 1000 mg every 8 hours for acute spasm (1)
preparations:
Dried leaves, infused. Six major processings: white, green, yellow, oolong, black, pu-erh (1) ·
Powder for oral solution in 4 L jugs (PEG 3350 ~236 g + NaCl, NaHCO3, KCl, Na2SO4) and low-volume packets (1) ·
Roasted beans, ground; brewed (drip, French press, espresso, cold brew, percolated) (1) ·
Tablets 500, 750 mg; injection 100 mg/mL (1)
fda max:
routes:
onset:
duration:
halflife: (Click arrow to add another value)
bioavailability:
pregnancy:
None (1) ·
Limit to <200 mg/d (~2 cups brewed) (1) ·
Limited human data.<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1) ·
Not absorbed; generally considered acceptable when bowel prep is required<sup class="pcp-cn" title="This claim needs a citation.">[[[Pharmacopedia:Citation needed|citation needed]]]</sup> (1)
legal:
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