B12 Injection vs Dihexa
A side-by-side research comparison of B12 Injection and Dihexa across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | B12 Injection | Dihexa |
|---|---|---|
| Full name | Methylcobalamin (Vitamin B12) Injectable | Dihexa (N-hexanoic-Tyr-Ile-(6)-aminohexanoic amide) |
| Category | Cognitive & Nootropic | Cognitive & Nootropic |
| Status | Prescribed / OTC | Research compound |
| Mechanism | Cofactor for methionine synthase (DNA methylation) and methylmalonyl-CoA mutase (energy metabolism). Supports myelin synthesis, neurotransmitter production, and red blood cell formation. | Allosteric potentiator of HGF/c-Met signaling driving synaptogenesis, dendritic spine formation, and neuronal survival in hippocampal circuits. |
| Molecular weight | 1344.38 Da | 507.6 Da |
| Half-life | ~6 days | 6-12 hours |
| Bioavailability | ~100% IM/SC | Moderate (oral/SubQ) |
| Typical dose | 1000-5000 mcg | 10-20 mg (oral) or 2-5 mg (SubQ) |
| Frequency | 1-3x per week | Daily |
| Route | Intramuscular or subcutaneous injection | Oral or Subcutaneous |
B12 Injection reported benefits
- Increased energy
- Improved cognitive function
- Nerve repair
- Red blood cell production
- Better sleep
- Mood enhancement
Dihexa reported benefits
- Dramatic synaptogenesis
- Memory improvement
- Cognitive restoration potential
- Dendritic spine growth
- HGF/c-Met activation
Related comparisons
Research and educational reference only. Not medical advice.