Rankings / Cognitive — Nootropics
Guanfacine
Cognitive · Alpha-2A agonist
Tier B
What this is
Arnsten's work demonstrates unique PFC-strengthening action. Non-abusable alternative or adjunct to stimulants in ADHD. Useful in tic disorders, PTSD-related hyperarousal. Extended-release formulation (Intuniv) is standard for ADHD.
Mechanism
Selective alpha-2A adrenergic receptor agonist; strengthens PFC network connectivity by closing HCN channels on dendritic spines; non-stimulant ADHD treatment
Dose & route
1-7 mg PO daily (XR); titrate slowly
Citations
- https://pubmed.ncbi.nlm.nih.gov/27334405/
- https://pubmed.ncbi.nlm.nih.gov/19302148/
- https://pmc.ncbi.nlm.nih.gov/articles/PMC3037554/
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This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.