Drilldown: Medicines
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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) ·
Partial agonist at D2 and 5HT1A. Antagonist at 5HT2A, α1A, α1B, α2C. More potent 5HT2A antagonism, 5HT1A partial agonism, and α1 antagonism (relative to D2 partial agonism) than aripiprazole, proposed to reduce akathisia and enhance affective/cognitive effects. (1)
uses:
Schizophrenia (FDA-approved 2015). Adjunctive treatment of major depressive disorder (2015). '''Agitation associated with dementia due to Alzheimer disease''' (FDA-approved May 2023, first agent specifically approved for this problem). Investigational for PTSD (combined with sertraline). (1) ·
'"`UNIQ--vote-00000015-QINU`"', '"`UNIQ--vote-00000016-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:
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) ·
Schizophrenia: 1 mg PO daily × 4 days, then 2 mg daily × 3 days, then 4 mg daily. MDD adjunct: 0.5-1 mg daily, increase to 2 mg max. AD agitation: 0.5 mg daily, titrate to 2-3 mg daily. (1)
preparations:
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