Cerebrolysin vs MK-677 (Ibutamoren)
A detailed comparison to help you understand the differences and choose the right peptide for your research goals.
Cerebrolysin
Cerebrolysin is a mixture of low-molecular-weight neuropeptides and free amino acids derived from purified pig brain proteins. It is approved in many countries for stroke, traumatic brain injury, and dementia.
Full details →MK-677 (Ibutamoren)
MK-677, also known as Ibutamoren, is an orally active growth hormone secretagogue. Unlike peptides, it can be taken orally and has a long half-life, providing 24-hour GH elevation.
Full details →Side-by-Side Comparison
| Aspect | Cerebrolysin | MK-677 (Ibutamoren) |
|---|---|---|
| Dose Range | 2150 mg–4300 mg | 10 mg–25 mg |
| Frequency | 1x daily | 1x daily |
| Cycle Length | 1–2 weeks | 8–24 weeks |
| Route | intramuscular | oral |
| Mechanism | Contains multiple neurotrophic factors that promote neuroplasticity, reduce neuronal apoptosis, and support synaptic function. Has both neurotrophic and neuroprotective properties. | Acts as a potent, selective agonist of the ghrelin receptor (GHS-R1a). Increases GH and IGF-1 levels without affecting cortisol. Mimics ghrelin's GH-releasing effects. |
| Typical Dosage | Clinical dosing: 10-30ml IV daily for acute conditions. Research use: 5-10ml IM daily for cognitive enhancement. Treatment courses typically last 10-20 days. | Typical dosing: 10-25mg taken orally once daily. Often taken at night due to sleep benefits and appetite increase. |
| Administration | Administered via intramuscular or intravenous injection. IV administration is typically used in clinical settings. IM can be used for research purposes. | Oral administration (capsule or liquid). Can be taken with or without food. Long half-life allows once-daily dosing. |
| Side Effects | Generally well-tolerated. May cause dizziness, headache, sweating, or injection site reactions. Rare cases of agitation or confusion. | Increased appetite and water retention are most common. May cause lethargy, vivid dreams, and mild numbness. Can affect blood glucose and insulin sensitivity. |
| Best For |
What They Have in Common
Cerebrolysin, MK-677 (Ibutamoren) are both commonly used for:
Key Differences
Unique to Cerebrolysin:
Unique to MK-677 (Ibutamoren):
Which Has Stronger Evidence?
- Recovery & Healing: Cerebrolysin has stronger research support.
| Goal | Cerebrolysin | MK-677 (Ibutamoren) |
|---|---|---|
| Recovery & Healing | high | medium |
Key Studies
Cerebrolysin
- Cerebrolysin Ameliorates Age-Induced Dendritic Spine Degeneration and Memory Decline in C57BL6 Mice.
Neurochemical research, 2025
- Is Cerebrolysin Useful in Psychiatry Disorders?
Biomedicines, 2025
- Cerebrolysin ameliorates ketamine-mediated anxiety and cognitive impairments via modulation of mitochondrial function and CREB/PGC-1α pathway.
Molecular brain, 2025
MK-677 (Ibutamoren)
- Knowing the minimal detectable dose can facilitate the interpretation of a hair test result: II. Case example with ibutamoren (MK-677), a growth hormone secretagogue.
Clinica chimica acta; international journal of clinical chemistry, 2026
- Hepatotoxicity induced by MK-677.
BMJ case reports, 2025
- Investigating the P53-dependent anti-cancer effect of ibutamoren in human cancer cell lines.
Basic & clinical pharmacology & toxicology, 2025
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