Description
Product Specifications
- Product: Epithalon 50mg
- Compound / formulation: Epithalon (Epitalon)
- Labeled quantity / volume: 50mg per vial
- Physical form: White lyophilized powder
- Research focus: Telomere Biology; Cellular Aging Research; Neuroendocrine Signaling; Circadian Rhythm Research
- Available batch identifiers: Black cap, lot BRP-267-EP50 (Freedom Diagnostics accession 2607070478)
- SKU: HOP-EPITHALON-50MG
- Intended classification: Laboratory research only
Independent Laboratory Testing
Black cap — Freedom Diagnostics — Accession #2607070478 — Lot BRP-267-EP50
- Compound reported: Epitalon (identity confirmed)
- Measured content: 57.87mg
- Purity: 99.98%
- Report date: July 9, 2026
- View laboratory report
House of Peptides maintains an established testing and sampling protocol with its suppliers. Under this agreed protocol, samples are randomly selected from a production batch and submitted for independent laboratory analysis.
The submitted samples are drawn from the same production batch as the corresponding inventory supplied to House of Peptides. This batch-based sampling approach provides analytical information associated with the production batch rather than individual testing of every vial.
House of Peptides may maintain inventory from multiple production batches of the same compound. Each Certificate of Analysis corresponds to its identified batch, which may be distinguished by cap color or lot designation. Orders are fulfilled on a first-in, first-out (FIFO) basis, so the batch supplied depends on available inventory at the time of fulfillment. Laboratory findings apply to the submitted samples from their respective batches, not to every individual vial.
Scientific Research Background
Cells contain chromosomes whose ends are protected by structures called telomeres. Researchers investigate how telomeres change as cells divide and how enzymes such as telomerase can influence their maintenance. These processes are biologically important, but changing a laboratory marker is not the same as improving health or lifespan.
Epithalon is a synthetic tetrapeptide made from alanine, glutamic acid, aspartic acid, and glycine. It was developed from the amino-acid composition of epithalamin, a complex pineal-gland-derived preparation. Epithalon and epithalamin are not the same material, and findings from one cannot automatically be attributed to the other.
The pineal gland helps regulate daily biological rhythms through melatonin secretion. Researchers have therefore also studied whether epithalon affects patterns of nerve and hormone signals, particularly in aging animals. The results vary by experimental model: some studies reported altered melatonin-related rhythms, while a separate rat pineal-gland experiment found no significant change in melatonin secretion.
The evidence base is mainly laboratory and animal research, with limited human research that does not establish clinically meaningful anti-aging or sleep benefits. Results in cultured cells or animals do not establish human safety, effectiveness, or longer lifespan.
Compound details
- Amino-acid sequence: Ala–Glu–Asp–Gly (AEDG)
- Peptide length: Four amino acids
- Research classification: Peptide
Clinical Research Observations
1. Why are scientists interested in epithalon and aging?
As we grow older, our cells change. Some divide more slowly, and the body's natural daily rhythms can also change. Researchers want to understand what causes these changes and whether certain small molecules can help explain them.
Epithalon is one of the peptides scientists have explored in this area.
What researchers found: Studies have examined epithalon in cells grown in laboratories and in animals, focusing on how cells age and how the body regulates certain hormones. These studies have not demonstrated that epithalon slows aging in people.
Why it matters: Studying aging-related changes can teach scientists about how the body works. But an interesting result in a laboratory is not the same as proof of a longer or healthier life.
2. What did researchers discover about the protective ends of our chromosomes?
Inside our cells, chromosomes carry genetic information. At the ends of chromosomes are protective sections called telomeres. You can think of them as the protective tips on shoelaces: they help keep the ends from becoming damaged.
Telomeres can become shorter as cells divide. Researchers study an enzyme called telomerase because it can help maintain them.
What researchers found: In a 2003 study, scientists exposed human cells grown in a laboratory to epithalon. They reported increased telomerase activity and longer telomeres in those cells.
Why it matters: This gave researchers a reason to investigate how epithalon interacts with cell biology. It did not show that epithalon lengthens telomeres in people or makes people live longer.
3. Does having longer telomeres always mean healthier cells?
Not necessarily. Cells need to divide to help maintain our bodies, but cell growth also needs to remain under control. Some cancer cells use telomere-maintenance processes to keep dividing.
That is why researchers look at more than whether telomeres become longer.
What researchers found: A 2025 laboratory study reported changes in telomere length in different kinds of human cell lines, including cancer-derived cells. The researchers described different ways those cells appeared to maintain their telomeres. A correction to the paper's figures was later published.
Why it matters: A longer telomere is not automatically a positive result. Scientists need to understand what happens in different cell types and investigate possible risks before drawing conclusions about health.
4. What did researchers learn from studying older monkeys?
Our bodies follow daily rhythms. For example, melatonin is associated with the sleep-wake cycle, while cortisol helps regulate how the body responds to daily demands.
Scientists have investigated whether these rhythms change with age and whether epithalon affects them.
What researchers found: In a 2001 study involving older female rhesus monkeys, researchers reported changes in patterns of melatonin and cortisol after exposure to epithalon.
Why it matters: The findings suggest epithalon may affect certain hormone rhythms in this animal model. They do not demonstrate better sleep or similar effects in humans.
5. Did every study find that epithalon changes melatonin?
No. Different experiments sometimes produce different results, especially when researchers study different animals or examine isolated tissues rather than a whole living body.
What researchers found: In a 2003 experiment using pineal glands from young and old rats, scientists did not find a significant change in melatonin release under the conditions they tested.
Why it matters: This is an important counterpoint to the monkey findings. The evidence does not support a simple claim that epithalon consistently raises melatonin or improves sleep.
6. Are epithalon and epithalamin the same thing?
Their names are similar, and both appear in aging-related research, but they are different materials.
Epithalon is one specific peptide made from four amino acids. Epithalamin is a mixture of substances obtained from pineal tissue.
What researchers found: Scientific reviews discuss research involving both materials, but the studies do not all test the same substance.
Why it matters: A result reported for epithalamin cannot automatically be used as evidence that epithalon produces the same result. Keeping them separate helps readers understand what has actually been studied.
7. What is the most important conclusion from the research so far?
Epithalon has been studied because of its possible effects on processes related to cell aging and daily hormone rhythms. Some experiments reported measurable changes, while others found no significant effect under the conditions tested.
What researchers found: Laboratory studies have reported changes in telomere-related measurements, and animal studies have examined hormone rhythms. There is not sufficient reliable human clinical evidence to establish that epithalon extends life, reverses aging, or treats sleep problems.
Why it matters: The research raises questions worth investigating, but it does not provide proof of a health benefit. More rigorous human studies would be needed before such conclusions could be drawn.
Published Scientific Research
The following publications concern synthetic epithalon or discuss its evidence base. They do not establish the analytical characteristics, safety, or clinical effectiveness of House of Peptides' Epithalon 50mg.
Khavinson, Bondarev & Butyugov (2003) — Epithalon peptide induces telomerase activity and telomere elongation in human somatic cells. Bulletin of Experimental Biology and Medicine. Cultured human fibroblasts showed changes in telomerase-related measures and telomere length. PubMed — PMID 12937682. DOI:
10.1023/a:1025493705728. Supports: Clinical Question 2.Khavinson, Goncharova & Lapin (2001) — Synthetic tetrapeptide epitalon restores disturbed neuroendocrine regulation in senescent monkeys. Neuro Endocrinology Letters. A study in older female rhesus monkeys reported changes in melatonin and cortisol rhythms. PubMed — PMID 11524632. Supports: Clinical Question 4.
Djeridane et al. (2003) — Effect of a synthetic pineal tetrapeptide (Ala-Glu-Asp-Gly) on melatonin secretion by the pineal gland of young and old rats. Journal of Endocrinological Investigation. In a rat pineal-gland preparation, the peptide did not significantly alter melatonin secretion under the tested conditions. PubMed — PMID 12809170. DOI:
10.1007/BF03345159. Supports: Clinical Question 5.Al-Dulaimi et al. (2025) — Epitalon increases telomere length in human cell lines through telomerase upregulation or ALT activity. Biogerontology. Normal human cell cultures and cancer-derived cell lines showed telomere-length changes through differing mechanisms; the publication was subsequently corrected in its figures (published correction, PMID 41240216). PubMed — PMID 40908429. DOI:
10.1007/s10522-025-10315-x. Supports: Clinical Question 3.Araj et al. (2025) — Overview of Epitalon—Highly Bioactive Pineal Tetrapeptide with Promising Properties. International Journal of Molecular Sciences. A review describing experimental mechanisms and important limits in the evidence base, including distinctions between epitalon and epithalamin. PubMed — PMID 40141333. DOI:
10.3390/ijms26062691. Supports: Clinical Questions 1, 6, and 7.Jain et al. (2026) — Epitalon and Epithalamin: A Narrative Review of Mechanistic, Preclinical, and Clinical Evidence. International Journal of Molecular Sciences. A review distinguishing synthetic epitalon from epithalamin and emphasizing the limited human clinical evidence. PubMed — PMID 42884164. DOI:
10.3390/ijms27198922. Supports: Clinical Questions 6 and 7.
Evidence boundary: Laboratory and animal observations are not proof of clinical anti-aging, sleep, or longevity benefits. Epithalamin and epithalon evidence must not be combined as if the materials were identical.
Understanding the Research Findings
Epithalon is a synthetic four-amino-acid peptide investigated in studies of telomere-related processes and neuroendocrine signaling.
In cultured human cells, researchers have reported changes in telomerase activity and telomere length. Animal studies have produced mixed observations about melatonin regulation, depending on the experimental model.
These findings do not establish that epithalon lengthens human lifespan, improves sleep, or reverses biological aging. They also do not establish the safety or effectiveness of this product.
Research Use Notice
For laboratory research only. Not intended for human or veterinary administration, diagnostic, or therapeutic use.
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