Research & Educational Use Only. This protocol guide is for informational purposes only and does not constitute medical advice. Always consult a qualified healthcare professional before beginning any research protocol.
Neuroprotection / Neuroplasticity StackEvidence Grade: C (Dihexa) / B (Cerebrolysin)
Dihexa + Cerebrolysin Stack Protocol Guide
The Dihexa + Cerebrolysin stack is an advanced neuroprotective combination for neuroplasticity and cognitive restoration. Dihexa is a HGF/c-Met receptor agonist reported to be millions of times more potent than BDNF at promoting synaptogenesis in animal models. Cerebrolysin is a porcine brain-derived peptide preparation containing neurotrophic factors used clinically for decades in Europe/Asia for stroke recovery, TBI, and cognitive decline. Together, Dihexa drives new synapse formation while Cerebrolysin provides neurotrophic support for neuronal survival and repair. This is an advanced/experimental stack due to limited human data on Dihexa.
Dihexa (N-hexanoic-Tyr-Ile-(6) aminohexanoic amide) activates the HGF/c-Met receptor pathway, one of the most powerful drivers of synaptogenesis and dendritic spine formation. In animal models it restored cognitive function in aged rats and models of neurodegeneration. It promotes the formation of new synaptic connections at potencies far exceeding BDNF.
Cerebrolysin Synergy
Cerebrolysin provides a balanced cocktail of neurotrophic factors, neuropeptides, and gangliosides that support neuronal survival, reduce apoptosis, and enhance synaptic plasticity. While Dihexa creates new synaptic connections, Cerebrolysin nourishes and protects both new and existing neurons. Clinical data supports its use in stroke recovery and Alzheimer disease.
Combined Dosing Protocol
Protocol
Compound 1
Compound 2
Timing
Duration
Conservative
Dihexa 10mg oral daily
Cerebrolysin 5mL IM 5x/week
AM oral, AM IM
4 weeks
Standard
Dihexa 20mg oral daily
Cerebrolysin 5mL IM 5x/week
AM
4-8 weeks
Research
Dihexa 5mg SubQ daily
Cerebrolysin 10mL IM 5x/week
AM
4 weeks on, 2 off
Reconstitution & Preparation
Dihexa Preparation
Dihexa capsules: typically 10mg or 20mg
Also available as sublingual solution
Oral bioavailability is reasonable
Store at room temperature, away from light
Cerebrolysin Preparation
Pre-filled ampules: 1mL, 5mL, 10mL
Ready to use, no reconstitution
Administer IM (deltoid or glute) or slow IV
Store refrigerated 2-8°C
Stacking Schedule (AM/PM Timing)
AM Protocol
Morning: Dihexa 10-20mg oral on empty stomach
Morning: Cerebrolysin 5mL IM injection
Weekdays only for cerebrolysin (Mon-Fri)
Dihexa daily including weekends
PM Protocol
No PM dosing required
Engage in cognitive tasks to leverage neuroplasticity
Quality sleep critical for memory consolidation
Avoid alcohol during protocol
Expected Timeline
Day 1-7
Cerebrolysin neurotrophic effects begin. Dihexa starts HGF/c-Met signaling. Subtle improvements in clarity and recall.
Week 2-3
Synaptogenesis from dihexa becoming active. Noticeable improvements in memory, learning speed, cognitive stamina.
Week 4-6
Peak neuroplasticity. Significant cognitive improvements. New synaptic connections consolidating. Best period for intense learning.
Week 6-8
Sustained benefits. Cycle off dihexa after 8 weeks (2-4 week break). Cerebrolysin effects persist 2-3 months.
Side Effects & Monitoring
Common Side Effects
Headache (cerebrolysin, first few days)
Dizziness (uncommon)
Injection site pain (cerebrolysin IM)
Insomnia if dihexa taken late
Vivid dreams
Precautions
Dihexa has very limited human safety data
HGF/c-Met pathway may promote certain cancers
Cerebrolysin: pork-derived - avoid if allergic
Epilepsy: cerebrolysin may lower seizure threshold (rare)
Short cycles with breaks recommended
Blood Work Recommendations
Panel
Markers
Timing
Basic
CBC, CMP
Baseline, Week 4
Liver
ALT, AST, GGT
Baseline, Week 4
Inflammatory
CRP
Baseline, Week 4
Liver monitoring important given experimental nature of dihexa. Consider formal cognitive testing to objectively measure improvements.
