Drilldown: Medicines

Coffee (1) · Propranolol (1) · Tea (1)

''Camellia sinensis'' (formerly ''Thea sinensis'') (1) · ''Coffea arabica'', ''Coffea canephora'' (robusta) (1) · Inderal (1)

Beta Blocker (1) · Caffeine plant (2) · Excitantia (2) · Non-selective (1) · Plant Medicine (2) · Xanthine (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) · Non-selective competitive antagonist at β1 and β2 adrenergic receptors. Lipophilic; significant blood–brain barrier penetration, accounting for its CNS effects. (1)

'"`UNIQ--vote-000000CF-QINU`"', '"`UNIQ--vote-000000D0-QINU`"', '"`UNIQ--vote-000000D1-QINU`"' (1) · '"`UNIQ--vote-000005E7-QINU`"', '"`UNIQ--vote-000005E8-QINU`"', '"`UNIQ--vote-000005E9-QINU`"', '"`UNIQ--vote-000005EA-QINU`"', '"`UNIQ--vote-000005EB-QINU`"' (1) · '"`UNIQ--vote-00000747-QINU`"', '"`UNIQ--vote-00000748-QINU`"' (1)

10–40 mg (situational anxiety); 40 mg BID (HTN) (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)

10, 20, 40, 60, 80 mg tabs; 60/80/120/160 mg ER caps; 1 mg/mL IV (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)

None (2) · 640 mg/d (HTN); 240 mg/d (migraine) (1)

None · Oral · IV · topical · IM · intranasal · rectal · Subcutaneous · Topical ophthalmic · ophthalmic · intramuscular · intravenous · transdermal · vaginal · Subcutaneous (abdomen · sublingual · thigh · inhaled · SC · intra-articular

Other values:

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15–30 min (1) · 1–2 h (PO), immediate (IV) (1) · ~15–30 min (1)

3–4 h (1) · 3–5 h (subjective) (1) · 6–12 h (IR); 24 h (ER) (1)

None · ~12 hours · ~27 days · ~5 h (caffeine) · '''Autoinduction''': 25-65 hours initially, falling to 12-17 hours after 2-3 weeks of dosing as carbamazepine induces its own CYP3A4 metabolism. Major clinical implication: doses require re-titration after the autoinduction period'"`UNIQ--ref-0000001D-QINU`"' · 0.5-1.5 hours (plasma); pharmacodynamic effect persists 24+ hours'"`UNIQ--ref-000000DE-QINU`"' · 1-1.3 hours'"`UNIQ--ref-000001A1-QINU`"' · 1-1.5 hours'"`UNIQ--ref-00000DE3-QINU`"' · 1-2 hours (parent compound)'"`UNIQ--ref-00000029-QINU`"' · 1-2 hours (parent); 18-30 hours for active metabolite oxypurinol'"`UNIQ--ref-0000030F-QINU`"' · 1-2 hours'"`UNIQ--ref-00000017-QINU`"' · 1-3 days acute, 4-6 days chronic; 4-16 days for norfluoxetine'"`UNIQ--ref-0000004C-QINU`"' · 1-3 hours (normal liver); markedly prolonged in overdose with glutathione depletion'"`UNIQ--ref-00000022-QINU`"' · 1-3 minutes (very short)'"`UNIQ--ref-00000C0F-QINU`"' · 1.4 hours (parent); 13-24 hours for active metabolite canrenone'"`UNIQ--ref-00000354-QINU`"' · 1.5-2 hours (longer in renal failure)'"`UNIQ--ref-00000222-QINU`"' · 1.5-2 hours'"`UNIQ--ref-00000020-QINU`"' · 10-11 hours (benazeprilat, the active metabolite)'"`UNIQ--ref-00000A22-QINU`"' · 11-13 h (immediate-release); 11-16 h (extended-release) · 11-15 hours'"`UNIQ--ref-00000842-QINU`"'

Other values:

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None (1) · ~25% (extensive hepatic first-pass) (1) · ~99% (caffeine) (1)

None (1) · Category C (1) · Limit to <200 mg/d (~2 cups brewed) (1)

None (1) · Rx-only in US (1) · Unrestricted (food) (1)