PinnyPeptide

Adamax vs Dihexa

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

Peptide A

Adamax

Cognitive

Adamantyl-capped Semax derivative — a more lipophilic, longer-acting nootropic analog.

Peptide B

Dihexa

Cognitive

Hepatocyte growth factor mimetic — claimed to be 7 orders of magnitude more potent than BDNF.

Typical vial

5 mg

Typical dose

100-500 mcg

Half-life

Estimated longer than Semax (~hours, uncharacterized)

FDA status

Not FDA approved.

Typical vial

30 mg

Typical dose

8,000-45,000 (oral) mcg

Half-life

~3-4 hours (oral)

FDA status

Not FDA approved. The related HGF-positive modulator fosgoni…

Adamax effects

  • Hypothesized BDNF upregulation in hippocampus / cortex
  • Theoretical longer duration of action vs. Semax
  • Theoretical improved blood-brain barrier penetration
  • Cognitive enhancement claims (attention, memory)
  • Mood and stress-resilience effects (extrapolated from Semax)

Dihexa effects

  • Claimed promotion of dendritic spine formation
  • HGF / c-Met signaling enhancement
  • Procognitive effects in rodent models
  • Orally bioavailable (rare for peptides)
  • Anecdotal cognitive enhancement in human users

Adamax side effects

  • Largely uncharacterized in published literature
  • By analogy with Semax: mild headache, sleep disturbance, irritability at high doses
  • Theoretical: adamantyl-related effects on dopamine signaling
  • Injection-site or intranasal irritation

Dihexa side effects

  • Essentially uncharacterized in humans
  • Headache (commonly reported in self-experimentation)
  • Increased emotionality / mood changes (subjective reports)
  • Theoretical: pro-oncogenic concerns via HGF / c-Met activation
  • Insomnia with late-day dosing

Adamax dosing ranges

Cognitive research (intranasal)

100-300 mcg · Once or twice daily · 14-30 days per cycle

Subcutaneous research

100-500 mcg · Once daily · 14-30 days per cycle

Dihexa dosing ranges

Cognitive research (oral / sublingual)

8-45 mg · Once daily · 30 days per cycle

Full Adamax guide → Full Dihexa guide →

Adamax vs Dihexa — common questions

What is the difference between Adamax and Dihexa?

Adamax: Adamantyl-capped Semax derivative — a more lipophilic, longer-acting nootropic analog. Typical dose 100-500 mcg. Dihexa: Hepatocyte growth factor mimetic — claimed to be 7 orders of magnitude more potent than BDNF. Typical dose 8,000-45,000 (oral) mcg. Both fall under the Cognitive category.

Can you stack Adamax and Dihexa?

Stacking Adamax with Dihexa 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, Adamax or Dihexa?

Adamax is typically dosed: Once or twice daily for Cognitive research (intranasal); Once daily for Subcutaneous research. Dihexa is typically dosed: Once daily for Cognitive research (oral / sublingual).

Are Adamax and Dihexa FDA approved?

Adamax: Not FDA approved. Dihexa: Not FDA approved. The related HGF-positive modulator fosgonimeton (ATH-1017) is in clinical trials for Alzheimer's.

Related peptide comparisons

acth-1-39 vs adamaxadamax vs colivelinadamax vs dnsp-11adamax vs p21adamax vs pe22-28colivelin vs dihexa

Tracking either of these?

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

Get Started Free