N-PEP-12 supplementation improves attention, working memory, and mental wellbeing in healthy middle-aged and older adults with subjective cognitive complaints
In a randomized, double-blind, placebo-controlled trial of 276 adults aged 50-75 with subjective cognitive complaints, N-PEP-12 supplementation (45 mg or 90 mg daily) showed a significant time-dependent treatment effect on primary attention outcomes (group-by-visit interaction p=0.003). Exploratory analyses at 90 days showed greater improvements in alertness, attention omissions, memory omissions, and Digit Span scores for both N-PEP-12 groups compared to placebo, with no significant main effect of treatment arm (p=0.133).
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N-PEP-12 supplementation improves attention, working memory, and mental wellbeing in healthy middle-aged and older adults with subjective cognitive complaints The current body of evidence comprises 1 study, including 1 randomized controlled trial. EvidenceHub rates the overall confidence at 44/100 (low).
The Claim
N-PEP-12 supplementation improves attention, working memory, and mental wellbeing in healthy middle-aged and older adults with subjective cognitive complaints
This conclusion is most relevant to: Healthy middle-aged and older adults (50-75 years) with subjective cognitive complaints and no clinically significant cognitive impairment.
What the Research Shows
The conclusion draws on 1 linked study. Highlights from the cited literature:
- ▸Impact of N-PEP-12 Supplementation on Attentional Performance and Mental Wellbeing in Healthy Adults with Subjective Cognitive Complaints: A Randomized, Placebo-Controlled Trial. (Nutrients, 2026) —
How It Works
The proposed biological pathway:
- ▸N-PEP-12 provides peptide-based nutrients with potential neuroprotective effects
- ▸Supplementation may support neuronal function and synaptic plasticity
- ▸Improved neuronal health may enhance attentional and working memory processes
- ▸Result: Improved attention and working memory performance in adults with SCCs
Who Might Benefit
Evidence fit by population:
- ▸Healthy middle-aged and older adults (50-75 years) with subjective cognitive complaints and no clinically significant cognitive impairment
Recommended Dose
45 mg or 90 mg daily
Limitations & Caveats
Important context when interpreting this evidence:
- ▸Primary outcome analysis showed no significant main effect of treatment arm (p=0.133), only a time-dependent interaction, indicating the effect is not straightforward
- ▸Endpoint-specific improvements at 90 days were exploratory and not corrected for multiple comparisons
- ▸Uncontrolled extension phase limits causal inference for the placebo-switch group
- ▸Subjective cognitive complaints are self-reported and may not reflect objective cognitive decline
Frequently Asked Questions
What is N-PEP-12?▼
N-PEP-12 is a peptide-based nutritional supplement with potential neuroprotective effects, tested in doses of 45 mg and 90 mg daily.
Who might benefit from N-PEP-12?▼
Healthy middle-aged and older adults (50-75 years) with subjective cognitive complaints, such as memory or attention issues, may see improvements in attention and working memory.
How long does it take to see effects?▼
In this study, improvements were observed at 90 days of supplementation, with assessments also at 30 and 180 days.
Are there any side effects?▼
Adverse events were infrequent and similarly distributed across groups, suggesting good tolerability, though specific side effects were not detailed in the abstract.
References
- 1.Chira D, Jemna N, Verișezan-Roșu O, Buruiană AM, Strilciuc Ș, Chelaru VF, Pârvu S, Mureșanu DF. “Impact of N-PEP-12 Supplementation on Attentional Performance and Mental Wellbeing in Healthy Adults with Subjective Cognitive Complaints: A Randomized, Placebo-Controlled Trial..” Nutrients, 2026. PMID: 42654319 DOI: 10.3390/nu18162739