Source comparison
MOTS-c Not Working Reasons Fix: Evidence-Based Comparison
Peptide degradation Storage above −20°C (lyophilised) or above 8°C (reconstituted) No AMPK phosphorylation, no change in mitochondrial respiration rates Discard compromised vials; source fresh peptide stored under verified cold-chain conditions Most common fai
This comparison does not assign a generated winner or score.
- Peptide degradation
- Storage above −20°C (lyophilised) or above 8°C (reconstituted)
- No AMPK phosphorylation, no change in mitochondrial respiration rates
- Discard compromised vials; source fresh peptide stored under verified cold-chain conditions
- Most common failure point—peptide integrity cannot be visually confirmed
- Incorrect reconstitution
- Using sterile water instead of bacteriostatic water, or wrong dilution ratio
- Contamination within 72 hours, inconsistent dosing, pH drift
- Use bacteriostatic water at 1mg/mL ratio; swirl gently, never shake; draw without injecting air
- Second most common error—reconstitution protocol matters as much as peptide purity
- Subtherapeutic dosing
- Dose below 5mg/kg or single daily administration
- Transient AMPK activation that returns to baseline within 6 hours
- Increase to 5–10mg/kg twice daily at 12-hour intervals
- Dose-response plateaus above 15mg/kg—more isn't better
- Administration timing mismatch
- Dosing at inconsistent times or only once daily
- Fluctuating plasma levels that never sustain threshold concentration
- Administer at fixed 12-hour intervals aligned with active phase onset
- Half-life of ~4 hours requires twice-daily dosing for sustained effect
- Freeze-thaw cycles
- Peptide vial frozen and thawed multiple times
- Cleaved peptide bonds, loss of tertiary structure
- Aliquot reconstituted solution into single-use volumes; freeze only once if necessary
- Each freeze-thaw cycle reduces bioactivity by 20–40%