Understand the source comparison
Best Peptides for OCD: Research Mechanism Comparison
Cerebrolysin Neurotrophic factor delivery (BDNF, NGF, CNTF) Restores prefrontal BDNF deficits; enhances synaptic plasticity for habit remodeling 10–30mL IV infusion, 10–20 sessions over 4–8 weeks 4–6 hours; IV only Most evidence in treatment-resistant OCD when
No winner is assigned.
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- Cerebrolysin
- Neurotrophic factor delivery (BDNF, NGF, CNTF)
- Restores prefrontal BDNF deficits; enhances synaptic plasticity for habit remodeling
- 10–30mL IV infusion, 10–20 sessions over 4–8 weeks
- 4–6 hours; IV only
- Most evidence in treatment-resistant OCD when combined with SSRIs; targets neuroplasticity directly
- Selank
- GABA-A receptor modulation; serotonin gene expression
- Reduces hyperarousal without sedation; enhances ERP therapy tolerance
- 300–600mcg intranasal 2–3x daily
- 30 minutes; intranasal preferred
- Best for baseline anxiety reduction without cognitive blunting; limited direct OCD trial data
- Semax
- BDNF/NGF upregulation; dopamine modulation
- Restores caudate dopamine signaling; improves cognitive flexibility
- 20–30 minutes; intranasal or subcutaneous
- Supports task-switching and inhibitory control; indirect OCD benefit via cognitive enhancement
- Dihexa
- HGF mimetic; induces synaptogenesis
- Forms new synaptic connections to compete with rigid habit circuits
- 1–5mg subcutaneous weekly
- 2–4 hours; effects persist via structural change
- No direct OCD trials; mechanism relevant to cognitive inflexibility and circuit remodeling
- MK-677
- Ghrelin receptor agonist; GH/IGF-1 secretion
- Enhances hippocampal neurogenesis; improves sleep architecture
- 10–25mg oral once daily
- 24 hours; oral administration
- Indirect benefit via sleep restoration and neurotrophin signaling; not OCD-specific