Side-by-side · Research reference
EpitalonvsThymalin
Side-by-side comparison across mechanism, dosage, evidence, side effects, administration, and stack synergies. Citations on every claim where available.
AHuman-MechanisticDraft8/37 cited
BHuman-MechanisticDraft12/40 cited
Epitalon
Pineal bioregulator · Telomerase activator
SQ or IM · Abdomen · Daily for 10–20 days
Thymalin
Immune restorer · Russian peptide bioregulator
IM · Daily for 5–10 days · 1-2×/year
01Mechanism of Action
Parameter
Epitalon
Thymalin
Primary target
Telomerase activity (proposed); pineal melatonin axis modulationKhavinson 2003
T-cell precursors + thymus-axis maturation pathwayKhavinson 2002
Pathway
Activation of telomerase reverse transcriptase (hTERT) in somatic cells; pineal-axis modulation supports endogenous melatoninKhavinson 2003
Modulation of T-cell differentiation + thymic hormone restoration in age-involuted thymusKhavinson 2002
Downstream effect
Telomere elongation, improved sleep architecture, reported lifespan extension in aged miceKhavinson 2003
Restored T-cell populations, improved immune surveillance, reduced infection rates in elderlyKhavinson 2002
Feedback intact?
—
—
Origin
Synthetic 4-AA peptide derived from epithalamin (a natural pineal extract)Khavinson 2003
Polypeptide fraction isolated from calf thymus extractKhavinson 2002
Antibody development
—
—
02Dosage Protocols
Parameter
Epitalon
Thymalin
Standard dose
5–10 mg / day for 10–20 days, 1–2× per yearKhavinson 2003
Anecdotal community protocol. Russian clinical literature uses similar cycling.
5–10 mg / day IM × 5–10 daysKhavinson 2002
Frequency
Once daily during a cycle
Once daily during cycle
Lower / starter dose
2.5 mg / day
2.5 mg / day
Evidence basis
In-vitro telomerase + Russian clinical trialsKhavinson 2003
Russian clinical + in vitroKhavinson 2002
Duration
10–20 day cycles, 1–2× per year
5–10 day cycles, 1–2× per year
Reconstitution
Bacteriostatic water
Saline or bacteriostatic water
Timing
Pre-sleep preferred (pineal alignment)
Morning preferred
Half-life
Hours (estimated)
Hours (estimated)
04Side Effects & Safety
Parameter
Epitalon
Thymalin
Injection site reaction
Mild irritation
Mild erythema at IM site
Sleep architecture
Improved subjective sleep quality (anecdotal)
—
Cancer risk
Theoretical via telomerase activation in pre-malignant cells
—
Long-term safety
Limited Western RCT data
Limited Western data
Pregnancy / OB
Avoid
Avoid
Antibody formation
Not reported
—
Allergic reaction
—
Rare hypersensitivity to bovine-derived polypeptide
Autoimmune flare
—
Theoretical risk in active autoimmune disease
Absolute Contraindications
Epitalon
- ·Pregnancy / breastfeeding
- ·Active malignancy or pre-malignant state
Thymalin
- ·Pregnancy / breastfeeding
- ·Bovine protein hypersensitivity
Relative Contraindications
Epitalon
- ·Family history of cancer
Thymalin
- ·Active autoimmune disease
- ·Concurrent immunosuppressant therapy
05Administration Protocol
Parameter
Epitalon
Thymalin
1. Reconstitution
Add 1–2 mL bacteriostatic water to 10 mg vial → 5–10 mg/mL.
Add 1–2 mL saline or bacteriostatic water per 10 mg vial.
2. Injection site
SQ — abdomen preferred. Rotate sites.
Intramuscular — deltoid or gluteal. Rotate sites.
3. Timing
Pre-sleep preferred to align with pineal axis.
Morning preferred during cycle.
4. Storage
Lyophilised: room temp, light-protected. Reconstituted: refrigerate ≤30 days.
Lyophilised: refrigerate, light-protected. Reconstituted: use immediately.
5. Needle
29–31G, 4–8 mm insulin syringe.
23–25G, 25–38 mm IM needle.
06Stack Synergy
Epitalon
— no documented stacks
Thymalin
+ Thymosin α-1
ModerateThymalin is a polypeptide complex; Thymosin α-1 is a single purified peptide. Both target the thymus-axis but at different levels — Thymalin restores broad thymic signaling; Tα-1 provides a specific molecular activator. Anecdotally combined for elderly immune support.
- Thymalin
- 5–10 mg IM · daily × 7 days
- Thymosin α-1
- 1.6 mg SQ · 2× weekly during the cycle
- Primary benefit
- Broad thymic restoration + targeted immune activation