Comparison
Epitalon vs Testosterone
Side-by-side of Epitalon and Testosterone. Every row below is pulled from the compound schema and will update as our data grows. For deeper reads, follow through to each compound page.
Epitalon
Epitalon peptide (Epithalon, tetrapeptide AEDG): telomerase activation, lifespan extension data, anti-aging trials, dosage, half-life, and safety.
Testosterone
Testosterone replacement therapy for hypogonadism: TRAVERSE 2023 cardiovascular data, cypionate dosing, body composition gains, Schedule III status.
Effects at a glance
Epitalon
- •Synthetic tetrapeptide (Ala-Glu-Asp-Gly) developed at the St. Petersburg Institute of Bioregulation
- •Russian clinical literature reports mortality reduction in elderly cohorts and improved melatonin output
- •Reported telomerase activation in human somatic cell culture and lifespan extension in mice and Drosophila
- •Independent Western replication is essentially absent; no FDA-standard RCTs
- •Anecdotal protocols use 5 to 10 mg subcutaneously daily for 10 to 20 day cycles, 2 to 4 times yearly
- •Not currently on the WADA Prohibited List
Testosterone
- •Primary androgen; FDA approved for hypogonadism with confirmed deficiency and symptoms
- •Testosterone Trials (2016) showed sexual function and bone density improvements in older hypogonadal men
- •TRAVERSE 2023 (n=5,246) found non-inferiority on MACE versus placebo, with higher AF and PE rates
- •Schedule III controlled substance in US; WADA banned in sport
- •Aromatizes to estradiol; converts to DHT via 5-alpha reductase; both metabolites matter clinically
- •Erythrocytosis (HCT above 54%) affects 5 to 25% of users and is the most common dose-limiting effect
Side-by-side
| Attribute | Epitalon | Testosterone |
|---|---|---|
| Category | peptide | hormone |
| Also known as | Epithalon, Ala-Glu-Asp-Gly, AEDG, Epithalamin (precursor extract) | TRT, testosterone replacement therapy, testosterone cypionate, testosterone enanthate, Androgel, Testim |
| Half-life (hr) ↗ | 0.5 | 192 |
| Typical dose (mg) ↗ | 5 | 150 |
| Dosing frequency | daily during cycle | weekly to twice-weekly (cypionate/enanthate IM or SC); daily (topical, oral); every 3 to 6 months (pellet) |
| Routes | subcutaneous, intramuscular, intranasal | intramuscular, subcutaneous, topical, buccal, subcutaneous (pellet), oral |
| Onset (hr) | 24 | 24 |
| Peak (hr) | 168 | 72 |
| Molecular weight | 390.35 | 288.42 |
| Molecular formula | C14H22N4O9 | C19H28O2 |
| Mechanism | Synthetic tetrapeptide proposed to interact directly with DNA and chromatin to modulate tissue-specific gene expression. Reported effects include telomerase activation, increased melatonin output from pineal cells, and circadian normalization. | Androgen receptor agonist driving anabolic gene transcription in muscle, bone, brain, and androgen-sensitive tissue. Aromatized to estradiol and 5-alpha-reduced to DHT, both with distinct downstream effects. |
| Legal status | Not FDA approved; registered in Russia under domestic pharmaceutical framework; research-use-only grey market in US/EU | Schedule III controlled substance (US); WADA banned |
| WADA status | unknown | banned |
| DEA / Rx | Not scheduled (research chemical) | Schedule III |
| Pregnancy | Insufficient data; not recommended | Category X; contraindicated in pregnancy (virilizing effect on female fetus) |
| CAS | 307297-39-8 | 58-22-0 |
| PubChem CID | 219042 | 6013 |
| Wikidata | Q5384126 | Q150726 |
Safety profile
Epitalon
Common side effects
- injection-site reactions
- occasional mild headache (rare)
Contraindications
- pregnancy
- lactation
- active malignancy (theoretical telomerase concern)
- concurrent immunosuppression
Interactions
- melatonin: potential additive effect on circadian and pineal output; no controlled data(minor)
Testosterone
Common side effects
- erythrocytosis
- acne
- oily skin
- fluid retention
- increased body hair
- fertility suppression
- injection-site reactions
Contraindications
- active prostate cancer
- active breast cancer
- untreated severe sleep apnea
- untreated severe BPH
- uncontrolled heart failure
- polycythemia at baseline
Interactions
- warfarin: may potentiate anticoagulant effect; monitor INR(moderate)
- insulin: may improve insulin sensitivity; monitor glucose in diabetics(moderate)
- 5-alpha reductase inhibitors (finasteride): blocks DHT conversion; reduces some androgen effects(moderate)
- aromatase inhibitors (anastrozole): lowers estradiol; risk of over-suppression(moderate)
Which Should You Take?
Testosterone comes out ahead for most readers on the criteria we weight: 3 catalogued goals, controlled substance, oral dosing, with a Tier-A outcome catalogued. Epitalon is the right call when one of the conditionals below applies.
- → If your priority is healthspan extension, pick Epitalon.
- → If your priority is sleep onset or sleep quality, pick Epitalon.
- → If your priority is hormonal optimization, pick Testosterone.
- → If your priority is sexual function, pick Testosterone.
Edge case: If you cannot self-administer injections, Testosterone is the only oral option in this pair.
Default choice: Testosterone. Wider use case, a Tier-A evidence outcome catalogued, and broader goal coverage. Reach for Epitalon only if your priority sits squarely in the goals it owns above.
This verdict is generated from each compound's schema (goals, legal status, evidence outcomes, dosing route). It updates automatically as our compound data evolves; the deeper read sits on each individual compound page.
Common questions
What is the difference between Epitalon and Testosterone?
Epitalon and Testosterone differ in category (peptide vs hormone), mechanism, and typical dosing. See the side-by-side table for full details.
Which has a longer half-life, Epitalon or Testosterone?
Epitalon half-life is 0.5 hours; Testosterone half-life is 192 hours.
Can you stack Epitalon with Testosterone?
Stack compatibility depends on mechanism overlap, legal status, and individual response. Check each compound page for specific interactions and contraindications before combining.
Go deeper