racetam and choline

the classic starter stack, with its redundancy left in on purpose

Read from the entries

computed from each compound's own data at build; nothing here is typed in

Conflictscompatible

3 pairs read: 3 compatible.

Piracetam + Citicoline
from a class-level rule
Piracetam + Alpha-GPC
from a class-level rule
Citicoline + Alpha-GPC

Overlap

Places where you may be paying twice for one mechanism.

Cholinergic class
Piracetam · Citicoline · Alpha-GPC
Choline source class
Citicoline · Alpha-GPC

Shared effects

Memory3 of 3
Attention3 of 3
Neuroprotection3 of 3

Evidence floor

A stack is only as well supported as its weakest item.

Human observational

set by Alpha-GPC

Piracetam5 papers
Citicoline5 papers
Alpha-GPC4 papers

Why it works

This is the classic racetam stack from the nootropics community: Piracetam as the base plus a choline source. It is here partly because the analysis on this page shows something useful. Listing both Citicoline and Alpha-GPC means paying twice for one mechanism, and the overlap card flags exactly that. Most people choose one of the two.

How they work together

The racetam-plus-choline pairing comes from community practice rather than from trials of the combination. Piracetam's own evidence is mixed. A 2002 meta-analysis found a global benefit in cognitively impaired older adults [1], and a 2024 meta-analysis found no significant memory effect [2].

Worth knowing

Alpha-GPC carries an observational stroke-risk signal from a very large cohort [3]. If you only take one choline source, that is a reasonable thing to weigh when choosing between them.

References

[1]
Clinical efficacy of piracetam in cognitive impairment: a meta-analysis.
Waegemans T, Wilsher CR, Danniau A et al.Dement Geriatr Cogn Disord 2002meta-analysis · humanPMID 12006732◌ unreviewed
[2]
Cognitive effects of piracetam in adults with memory impairment: A systematic review and meta-analysis.
Gouhie FA, Barbosa KO, Cruz ABR et al.Clin Neurol Neurosurg 2024meta-analysis · humanPMID 38878641◌ unreviewed
[3]
Association of L-α Glycerylphosphorylcholine With Subsequent Stroke Risk After 10 Years.
Lee G, Choi S, Chang J et al.JAMA Netw Open 2021observational · humanPMID 34817582◌ unreviewed

Not a protocol and not a recommendation to combine anything. Read the individual entries, and talk to a clinician before taking any of this, particularly anything labelled prescription drug.