Rankings / Cognitive — Nootropics

Guanfacine

Cognitive · Alpha-2A agonist

Tier B

prescription
6.8 / 10
Tier B
Ev 8.0 Bn 5.0 Sf 7.0 Ax 6.0

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

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.