Side-by-side comparison of mechanisms, dosing, interactions, and stacking potential.
| BPC-157 (Oral Stable Form) | Epitalon (Epithalon) | |
|---|---|---|
| Category | Peptides | Peptides |
| Standard Dose | Research indicates 250-500 mcg twice daily via oral capsule on empty stomach. | Research indicates 5-10 mg daily via subcutaneous injection for 10-20 day cycles. |
| Timing | On empty stomach, 30 minutes before meals. Twice daily dosing (morning and evening) provides consistent levels. | Evening administration preferred (aligns with pineal/melatonin function). Some protocols split doses AM/PM. |
| Cycle Duration | 4-12 weeks. Oral form enables easier long-term use compared to injectable. | 10-20 day intensive cycles repeated every 4-6 months. Not used continuously. |
| Evidence Level | animal_plus_anecdotal | animal_plus_anecdotal |
Oral-stable BPC-157, typically formulated as the arginate salt, retains the same mechanism as standard BPC-157 — promoting angiogenesis via VEGFR2/PI3K/Akt/eNOS and Src-Caveolin-1-eNOS pathways, enhancing nitric oxide production, and stimulating tendon fibroblast growth and collagen formation. The arginate salt provides a protective buffer against gastric acid degradation, maintaining peptide integrity across a wider pH range. BPC-157 demonstrates remarkable native stability in human gastric juice (24+ hours), and the arginate form reportedly achieves 7-fold greater oral bioavailability compared to the acetate salt in preclinical studies.
Research indicates 250-500 mcg twice daily via oral capsule on empty stomach.
On empty stomach, 30 minutes before meals. Twice daily dosing (morning and evening) provides consistent levels.
4-12 weeks. Oral form enables easier long-term use compared to injectable.
Epitalon (Ala-Glu-Asp-Gly / AEDG) is a synthetic tetrapeptide based on the natural pineal gland peptide epithalamin. It activates telomerase by inducing expression of the catalytic subunit hTERT, resulting in telomere elongation averaging 33.3% in human somatic cells. Epitalon restores pineal melatonin synthesis and circadian gene expression in aged organisms, increases BDNF, and upregulates CREB1. It also modulates the neuroendocrine system through its effects on the hypothalamic-pituitary axis and antioxidant enzyme regulation.
Research indicates 5-10 mg daily via subcutaneous injection for 10-20 day cycles.
Evening administration preferred (aligns with pineal/melatonin function). Some protocols split doses AM/PM.
10-20 day intensive cycles repeated every 4-6 months. Not used continuously.
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