Drilldown: Medicines
Medicines > halflife 
:
1-2 hours'"`UNIQ--ref-00000017-QINU`"' or
Not applicable (electrolyte and buffer) or
~5 h (caffeine)
:
1-2 hours'"`UNIQ--ref-00000017-QINU`"' or
Not applicable (electrolyte and buffer) or
~5 h (caffeine) Use the filters below to narrow your results.
generic:
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-00000016-QINU`"' Bicarbonate is not benign: high-volume use produces hypernatremia, metabolic alkalosis, hypokalemia, and (in arrest) paradoxical intracellular acidosis'"`UNIQ--ref-00000017-QINU`"'. (1)
uses:
'"`UNIQ--vote-00000015-QINU`"', '"`UNIQ--vote-00000016-QINU`"' (1) ·
'"`UNIQ--vote-00000018-QINU`"', '"`UNIQ--vote-00000019-QINU`"', '"`UNIQ--vote-0000001A-QINU`"', '"`UNIQ--vote-0000001B-QINU`"', '"`UNIQ--vote-0000001C-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:
IV: 1 mEq/kg bolus in arrest indication, then titrated to ABG and clinical status; PO: 325-2000 mg up to QID as antacid (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:
4.2%, 7.5%, 8.4% IV (1 mEq/mL at 8.4%); 325, 650 mg oral tablets; bulk powder (1) ·
Dried leaves, infused. Six major processings: white, green, yellow, oolong, black, pu-erh (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:
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