Side-by-side · Research reference

CerebrolysinvsGLP-1 (7-37)

Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.

APhase 3HUMAN-REVIEWED11/65 cited

BHuman-MechanisticHUMAN-REVIEWED16/43 cited

Cerebrolysin

Porcine Brain-Derived Peptide Mix · Phase 3

30 mL/dayStandard doseAfridi 2026 Staszewski 2026

14–21 daysTreatment course

49% vs 35%mRS 0-2 at 12 moStaszewski 2026

IV infusion · 100-250 mL saline · Daily

GLP-1 (7-37)

Incretin Hormone · Native Peptide

~2 minHalf-lifeAlavi 2021 Ding 2017

3297.7 DaMolecular weightAlavi 2021

1922Discovery year

Research use only · IV/SC in experimental settings

01Mechanism of Action

Parameter

Cerebrolysin

GLP-1 (7-37)

Primary target

Multiple neurotrophic pathways — mimics BDNF, NGF, CNTF receptor activation

GLP-1 receptor (class B GPCR)Koole 2015

Pathway

Cerebrolysin peptides → BDNF/NGF/CNTF receptor binding → TrkB/TrkA/LIFR signaling → neuroprotection, neuroplasticity, synaptogenesis

GLP-1R activation → cAMP production → PKA signaling → insulin secretion (pancreatic β-cells)Lu 2025 Koole 2015

Downstream effect

Reduced apoptosis (Bax ↓, Bcl-2 ↑), suppressed TNF-α inflammation, elevated endogenous BDNF, enhanced synaptic plasticity and motor recovery

Glucose-dependent insulin release, glucagon suppression, delayed gastric emptying, reduced food intakeLu 2025 Ding 2017

Feedback intact?

Yes — exogenous peptides do not suppress endogenous neurotrophic factor synthesis

Yes — physiological secretion and degradation preserved

Origin

Enzymatic breakdown of lipid-free porcine brain proteins → standardized low-MW peptide fraction (<10 kDa) + free amino acids

Endogenous peptide cleaved from proglucagon in intestinal L cells; secreted postprandially

Antibody development

Not reported in human trials; porcine origin theoretically immunogenic but no clinically significant allergic reactions documented

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02Dosage Protocols

Parameter

Cerebrolysin

GLP-1 (7-37)

Standard dose (stroke)

30–50 mL / day IVStaszewski 2026 Afridi 2026

Most trials use 30 mL in 100-250 mL saline over 30-60 min.

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Lower dose (dementia)

10–20 mL / day IV or IMKhatkova 2026

Chronic neurodegenerative conditions; intermittent courses.

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High dose (TBI)

50 mL / day IVKobayashi 2025

CLINCH trial protocol for intracerebral hemorrhage.

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Duration

10–21 days (acute); intermittent courses (chronic)

Stroke trials typically 10-14 days; rehabilitation phases may use repeated 10-day courses.

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Timing (stroke)

Initiate within 12 hrs of symptom onset; up to 6 hrs optimal

Earlier initiation associated with better outcomes.

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Adjunct to thrombectomy

30-50 mL daily × 10-14 days, starting day of EVT

Propensity-matched data show 12-mo mRS 0-2 improved from 35% to 49%.

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Evidence basis

Phase 3 RCT + observational

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Administration route

IV infusion (preferred) or IM injection

IV allows higher doses; IM used in outpatient/chronic settings.

—

Clinical use

—

None — native GLP-1 not used therapeutically

Engineered analogues (semaglutide, liraglutide) used clinically.Friedman 2024

Research dosing

—

Variable — 0.1–10 nmol/kg in animal models

Used as reference standard for analogue comparison.

Half-life

—

~2 minutes (plasma)Alavi 2021 Ding 2017

Requires continuous infusion for sustained effect.

Modified analogues

—

t½ extended to 13 h (liraglutide), 165 h (semaglutide)

Via DPP-4 resistance + fatty acid acylation.

03Metabolic / Fat Loss Evidence

Parameter

Cerebrolysin

GLP-1 (7-37)

Mechanism

—

GLP-1R activation in hypothalamic satiety centers (arcuate nucleus) reduces food intakeLu 2025

Effect demonstrated with long-acting analogues (liraglutide).Lu 2025

Native GLP-1 efficacy

—

Minimal — rapid degradation prevents sustained appetite suppression

Gastric emptying

—

Delayed in animal models, contributing to satiety

Body weight impact

—

Not observed with native GLP-1 — requires analogue formulations

04Side Effects & Safety

Parameter

Cerebrolysin

GLP-1 (7-37)

Injection site reaction

Mild pain, erythema (IM route)

—

Infusion reaction

Rare: flushing, transient hypotension during rapid IV

—

Agitation / Restlessness

Reported in <5% of patients; typically mild, self-limited

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Headache

Mild, transient; incidence not significantly elevated vs placeboPatel 2025

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Serious adverse events

No significant increase vs placebo (RR 1.02, 95% CI 0.87-1.20)

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Hemorrhagic transformation

Reduced incidence vs control (52% reduction in high-risk post-thrombolysis cohort)Kalinin 2025

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Mortality

No increase; meta-analysis RR 0.89 (0.68-1.18)

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Allergic reaction

Rare; porcine origin theoretically immunogenic but clinically insignificant

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Seizure risk

Not elevated; safe in epilepsy populations

—

Native GLP-1

—

Well-tolerated in research settings; no prolonged exposure data

Hypoglycemia risk

—

Low — insulin secretion is glucose-dependent

Analogue side effects

—

Nausea, vomiting, diarrhea (GLP-1R agonists)

Not applicable to native GLP-1 due to non-therapeutic use.

GLP-1 resistance

—

High glucose-induced PKCβ overexpression may reduce GLP-1 responsiveness in endothelial cellsPujadas 2016

Absolute Contraindications

Cerebrolysin

·Known hypersensitivity to porcine-derived products
·Active seizure disorder (relative — caution advised)

GLP-1 (7-37)

—

Relative Contraindications

Cerebrolysin

·Severe renal impairment (amino acid load — monitor)
·Pregnancy / lactation (insufficient safety data)

GLP-1 (7-37)

—

05Administration Protocol

Parameter

Cerebrolysin

GLP-1 (7-37)

1. Preparation (IV infusion)

Dilute prescribed dose (10-50 mL) in 100-250 mL 0.9% sodium chloride. Use immediately after preparation. Do not mix with other medications in same infusion bag.

Native GLP-1(7-37) is not formulated for therapeutic use. Administered IV or SC in experimental protocols to study GLP-1R pharmacology and as reference standard for analogue development.

2. Infusion rate

Administer over 30-60 minutes. Slower infusion reduces risk of transient hypotension or flushing. Monitor vital signs during first administration.

Lyophilised peptide stored at -20°C or below. Reconstituted solutions should be prepared fresh and used immediately due to rapid degradation.

3. IM injection (alternative)

For 5-10 mL doses: inject deep IM into gluteal or deltoid muscle. Rotate sites if repeated daily. IM preferred for outpatient/chronic use.

For therapeutic GLP-1R activation, use FDA-approved long-acting analogues: semaglutide (once weekly), liraglutide (once daily), dulaglutide (once weekly), or exenatide (twice daily or once weekly).

4. Timing

Acute stroke: initiate within 6-12 hrs of symptom onset. Daily administration, preferably same time each day. Continue 10-21 days per protocol.

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5. Storage

Store unopened ampoules at 15-25°C, protected from light. Do not freeze. Use diluted solution immediately; discard unused portion.

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6. Co-administration

Compatible with standard stroke care (thrombolysis, thrombectomy, antiplatelet/anticoagulant therapy). Does not interfere with reperfusion therapies.

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06Stack Synergy

Cerebrolysin

+ Semax

Moderate

View Semax →

Cerebrolysin (multimodal neurotrophic peptide mix) and Semax (ACTH(4-10) analogue) operate through complementary neuroprotective pathways. Cerebrolysin elevates BDNF and suppresses apoptosis/inflammation via TrkB/TrkA signaling, while Semax enhances neuroplasticity through BDNF upregulation and dopaminergic modulation. Combined use in stroke or TBI may amplify anti-apoptotic effects and accelerate cognitive/motor recovery, though no direct RCT data exist for the combination.

Cerebrolysin: 30 mL IV daily × 10-14 days
Semax: 300-600 mcg intranasal BID × 10-14 days
Timing: Concurrent during acute recovery phase
Primary benefit: Enhanced neuroprotection, accelerated motor/cognitive recovery post-stroke or TBI

+ BPC-157

Multi-pathway

View BPC-157 →

Cerebrolysin provides CNS-specific neurotrophic support (BDNF, NGF pathways), while BPC-157 offers systemic tissue repair via angiogenesis (VEGF upregulation) and anti-inflammatory effects. In traumatic brain injury or stroke, Cerebrolysin addresses neuronal survival and synaptic plasticity, whereas BPC-157 may enhance vascular repair and blood-brain barrier integrity. The combination targets both neuronal and vascular compartments of brain injury, though clinical validation is lacking.

Cerebrolysin: 30-50 mL IV daily × 14 days
BPC-157: 250-500 mcg SQ daily × 14-28 days
Timing: Initiate both within 24-48 hrs of injury
Primary benefit: Dual neuronal + vascular repair in TBI or stroke; accelerated functional recovery

GLP-1 (7-37)

— no documented stacks