Home › Compare › Cortagen vs Livagen
Cortagen vs Livagen
Cortagen sits in cognitive / nootropic, while Livagen sits in immune — so despite being mentioned together they are used for different things. The table below sets out the differences. We give no dosing guidance.
Side by side, in plain English — what each one is, where they overlap and where they genuinely differ.
CortagenCognitive / Nootropic
LivagenImmuneAt a glance
| Cortagen | Livagen | |
|---|---|---|
| Category | Cognitive / Nootropic | Immune |
| Typical route | SubQ | SubQ |
| Shelf life once mixed | ~30 days | ~30 days |
| Commonly reported effects | Cortical repair signaling Improved cognition after stress Neuroprotection | Immune modulation Anti-inflammatory Cellular longevity signaling Chromatin support |
| Reported considerations | Rare mild sedation | Rare mild fatigue |
The differences that actually matter
They aren't really substitutes: Cortagen sits in Cognitive / Nootropic while Livagen sits in Immune. People usually pick between them because of a shared secondary effect rather than because they do the same job.
Where they overlap: cortical repair signaling.
Reported mainly for Cortagen: improved cognition after stress, neuroprotection.
Reported mainly for Livagen: immune modulation, anti-inflammatory, chromatin support.
What Cortagen is
Cortagen is a short-chain bioregulator peptide derived from brain tissue, classified as a cytomedin due to its tissue-specific modulatory effects. Its proposed mechanism involves interacting with cellular processes to support neuronal health and function within the cerebral cortex. While not directly binding to a single, specific receptor like many pharmaceutical drugs, Cortagen is understood to influence gene expression and protein synthesis pathways essential for neuroprotection and cellular repair. This action c
What Livagen is
Livagen is a naturally occurring tripeptide bioregulator with the sequence Lys-Glu-Asp, originally identified from calf spleen tissue. Its mechanism involves interaction with specific immune cell populations, particularly lymphocytes, influencing their activity and differentiation pathways. While not acting through a singular receptor in the classical pharmacological sense, Livagen is thought to modulate gene expression related to immune cell function, helping to restore balance within the immune system. This biore
How to compare them for yourself
Anecdotes online are noisy because nobody is measuring the same thing. The only comparison that means anything is your own: log each entry with a timestamp, keep the vial ledger honest so you know what you actually got through, pick two or three metrics before you start, and look at the trend after several weeks rather than day to day.
Peptide Wizard does that part for you — Cortagen and Livagen are both in the built-in reference library with a 3D vial, and your history, vial ledger and cost per entry stay private on your device.
FAQ
What is the difference between Cortagen and Livagen?
They aren't really substitutes: Cortagen sits in Cognitive / Nootropic while Livagen sits in Immune. People usually pick between them because of a shared secondary effect rather than because they do the same job.
Can you log Cortagen and Livagen in the same period?
Plenty of people record more than one peptide at a time. Peptide Wizard keeps a separate vial ledger and entry history for each, so you can see exactly what overlapped and when — it does not recommend combinations or doses.
Which is better, Cortagen or Livagen?
There isn't a universal answer — reported responses vary a lot between individuals, which is why your own log is more informative than anyone else's anecdote. Track one variable at a time and compare your own metrics over several weeks.
Is this medical advice?
No. This page is educational reference material only. It contains no dosing guidance. Speak to a qualified healthcare professional before making any decisions.
See all peptide comparisons →
Educational reference only. This page contains no dosing guidance and is not medical advice.