Flecainide

ID: flecainide

Aliases: flecainide acetate

Type: compound

Route/form: oral or route depends on studied product

Status: approved

Evidence level: approved / labelled

Best data tier: approved label + human controlled/review

Support scope: human, non-human/mechanistic

Source types: human_rct, label, preclinical

Linked sources: 3

Broad outcomes: Brain / mood / sleep, Cardiovascular / lipids / blood pressure

Reading note: These are curation notes anchored to linked sources, not a clinical recommendation or protocol.

Targets / mechanism

• Nav1.5 sodium channel blocker
• astroglial connexin inhibition

Optimization domains

• arrhythmia
• glial connexins
• wakefulness combo

Research basis

• Flecainide is included because it appears as the connexin-modulating component of THN102 and has a real approved antiarrhythmic identity.
• The THN102 human sleep-deprivation study gives a narrow wakefulness/cognition anchor for the modafinil-plus-low-dose-flecainide concept.
• Standalone flecainide should be understood primarily as a cardiac sodium-channel drug, not a nootropic.

Limits, risks, and missing evidence

• The official label and CAST context make proarrhythmia/conduction risk the central safety issue.
• A glial connexin mechanism in a combination product does not justify casual standalone experimentation.
• Structural heart disease, electrolyte issues, interacting drugs, and ECG context are not optional details for this compound.

Risk flags

• approved drug
• antiarrhythmic
• proarrhythmia
• cardiac conduction
• combination context only

Linked papers, labels, and reviews

1. THN102 during 40-hour total sleep deprivation in healthy subjects
   human_rct / pubmed_thn102_2019
   Modafinil plus low-dose flecainide combination.
2. Cortico-amygdala-striatal activation by modafinil/flecainide combination
   preclinical / pubmed_modafinil_flecainide_2018
   Rodent FDG-PET support for THN102 mechanism.
3. DailyMed label: flecainide acetate tablet
   label / dailymed_flecainide_label
   Official flecainide label; includes CAST/proarrhythmia context and conduction-risk warnings.