PinnyPeptide

Cortagen vs Thymagen

Side-by-side comparison: effects, dosing ranges, side effects, regulatory status, and reconstitution.

Peptide A

Cortagen

Bioregulators

Khavinson short peptide bioregulator targeting cortical neurons and CNS gene expression.

Peptide B

Thymagen

Bioregulators

Khavinson short peptide bioregulator targeting thymic function — Glu-Trp synthetic version.

Typical vial

20 mg

Typical dose

1,000-5,000 mcg

Half-life

Short (minutes); biological effect persists via gene-expression modulation

FDA status

Not FDA approved.

Typical vial

20 mg

Typical dose

1,000-5,000 mcg

Half-life

Short (minutes); biological effect persists via gene-expression modulation

FDA status

Not FDA approved.

Cortagen effects

  • Reported support of cortical neuron function and gene expression
  • Improvements in memory and attention (Russian observational)
  • Neuroprotection in cerebral ischemia models
  • Possible support for post-stroke and post-concussive recovery
  • Modulation of neuroplasticity-related gene expression

Thymagen effects

  • Reported improvement in T-cell function and number
  • Support of thymic function in aging populations
  • Recovery support after severe illness
  • Anti-inflammatory effects
  • Modulation of immune gene expression

Cortagen side effects

  • Generally well-tolerated in Russian clinical use
  • Mild injection-site reactions
  • Limited Western safety validation
  • Possible mild sleep disturbance with late-day dosing

Thymagen side effects

  • Generally well-tolerated in Russian clinical use
  • Mild injection-site reactions
  • Limited Western safety validation
  • Caution in active autoimmune disease

Cortagen dosing ranges

Cognitive support

1-5 mg · Once daily morning (SubQ) or intranasal · 10-20 day cycles, repeated 2-3 times per year

Thymagen dosing ranges

Immune support

1-5 mg · Once daily (SubQ) or sublingual · 10-20 day cycles, repeated 2-3 times per year

Full Cortagen guide → Full Thymagen guide →

Cortagen vs Thymagen — common questions

What is the difference between Cortagen and Thymagen?

Cortagen: Khavinson short peptide bioregulator targeting cortical neurons and CNS gene expression. Typical dose 1,000-5,000 mcg. Thymagen: Khavinson short peptide bioregulator targeting thymic function — Glu-Trp synthetic version. Typical dose 1,000-5,000 mcg. Both fall under the Bioregulators category.

Can you stack Cortagen and Thymagen?

Stacking Cortagen with Thymagen is a protocol-design question best raised with a clinician — it depends on your goal, current bloodwork, and whether both peptides target overlapping mechanisms. Both peptides should be tracked independently with separate injection sites and timing. PinnyPeptide supports multi-peptide stacks with automatic injection site rotation.

Which is dosed more frequently, Cortagen or Thymagen?

Cortagen is typically dosed: Once daily morning (SubQ) or intranasal for Cognitive support. Thymagen is typically dosed: Once daily (SubQ) or sublingual for Immune support.

Are Cortagen and Thymagen FDA approved?

Cortagen: Not FDA approved. Thymagen: Not FDA approved.

Related peptide comparisons

bronchogen vs cortagencardiogen vs cortagencartalax vs cortagencortagen vs crystagencortagen vs epithaloncortagen vs ovagen

Tracking either of these?

Log doses, automate injection site rotation, and never lose track of where you last pinned. Free forever.

Get Started Free