B12 Injection vs Selank
A side-by-side research comparison of B12 Injection and Selank across mechanism, dosing, half-life, benefits, side effects and research status.
Comparison table
| Attribute | B12 Injection | Selank |
|---|---|---|
| Full name | Methylcobalamin (Vitamin B12) Injectable | Selank (TP-7) |
| 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. | Modulates GABA-A allosteric sites, increases BDNF, stabilizes enkephalin degradation, and influences serotonin metabolism. Enhances IL-6 and Th1/Th2 balance. |
| Molecular weight | 1344.38 Da | 751.9 Da |
| Half-life | ~6 days | 3-5 min (IV) / 15-30 min (intranasal) |
| Bioavailability | ~100% IM/SC | Moderate (intranasal) |
| Typical dose | 1000-5000 mcg | 250-750 mcg per spray dose |
| Frequency | 1-3x per week | 2-3x daily |
| Route | Intramuscular or subcutaneous injection | Intranasal spray |
B12 Injection reported benefits
- Increased energy
- Improved cognitive function
- Nerve repair
- Red blood cell production
- Better sleep
- Mood enhancement
Selank reported benefits
- Anxiolytic without sedation
- Improved memory/learning
- Cognitive flexibility
- Immune modulation
- BDNF upregulation
- No addiction
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Research and educational reference only. Not medical advice.