Where to Buy Epitalon: Price & Vendor Guide

Epitalon (AEDG, Ala-Glu-Asp-Gly) is a simple 390 Da tetrapeptide — the synthetic shorter analog of the pineal-derived polypeptide epithalamin originally discovered by Khavinson's group. Because it's a short peptide with a simple structure, synthesis is cheap, and the research market reflects that: per-mg pricing ranges from $3/mg to $33/mg depending almost entirely on vial size. A 50mg vial often costs less per mg than a fifth of a 10mg vial.

This guide covers what you should actually pay, why the 50mg vial is the right choice for almost every user (standard course = 40mg total), and how to verify a COA for this straightforward tetrapeptide. Epitalon is cheap enough that there's no excuse for a vendor to skip third-party testing.

This is not a ranked vendor list — for that, see our Best Epitalon Vendors comparison. This guide teaches you how to evaluate any vendor yourself.

Understanding Epitalon Pricing

Epitalon is sold as a lyophilized powder in sealed glass vials. Because the standard protocol is a fixed-total-dose course (40mg over 20 days at 2 mg/day), vial size selection is the single biggest driver of per-mg cost. Larger vials drop cost dramatically because the base synthesis cost is nearly flat.

Current Market Pricing (2026)

The pattern is dramatic: the 50mg vial can cost as little as $1.60/mg from top-tier vendors — a full 20-day course for about $65 on the low end, $200 on the high end. Compare that to buying four 10mg vials which could run $136-520 for the same total peptide. If you're committed to a full course, the 50mg vial is the only rational choice.

Cost Per Course at Standard Protocols

For current vendor-specific pricing with exact $/mg breakdowns, see our Best Epitalon Vendors comparison.

How to Verify Epitalon Quality

Epitalon is a straightforward 4-amino-acid peptide with molecular formula C14H22N4O9 and molecular weight 390.35 Da. Synthesis is simple and cheap — there's zero excuse for a vendor to skip third-party testing. A legitimate COA for this peptide is so easy to produce that the absence of one signals either laziness or deception.

What a COA (Certificate of Analysis) Should Include

Identity Confirmation

• Mass spectrometry confirming the correct molecular weight (390.35 Da for epitalon)
• Amino acid sequence verification matching Ala-Glu-Asp-Gly (AEDG)

Purity Testing

• HPLC purity — look for 98%+ purity
• The chromatogram should show a single dominant peak with minimal impurities

Contamination Testing

• Endotoxin levels (bacterial contamination)
• Residual solvent analysis (acetonitrile, TFA)
• Heavy metals screening

How to Verify a COA Is Legitimate

1. Check the testing lab — Reputable labs include Janoshik Analytical, MZ Biolabs, and Colmaric Analyticals. Avoid vendors who only show "in-house" testing.

2. Verify on the lab's website — Janoshik COAs have a task number you can look up directly at janoshik.com.

3. Check the date — COAs should be recent (within 6 months).

4. Match the batch — The batch/lot number on the COA should match what's printed on your vial.

5. Look for the original PDF — Screenshots are easier to fake than full PDFs with lab letterhead and signatures.

Red Flags to Avoid

• No COA available — for a peptide this cheap to synthesize and test, this is inexcusable
• Only in-house testing — self-reported purity numbers are meaningless
• Prices below $1.50/mg on any size — implausible even for epitalon
• Confusing epitalon and epithalamin — these are related but different compounds (epithalamin is the full polypeptide extract, epitalon is the synthetic tetrapeptide fragment)
• No contact information — legitimate vendors have real customer service
• No return or reship policy — reputable vendors stand behind their products

Choosing the Right Vial Size

Epitalon is almost always run in fixed-length courses (20 days standard, 10 days high-dose), which makes vial size math unusually clean: one vial should cover one course if possible.

The 28-Day Rule

Once reconstituted with bacteriostatic water, epitalon is typically stable for up to 21-28 days refrigerated — it's a small stable tetrapeptide. Sterile water drops this to 24 hours.

All scenarios fit inside the 28-day window, making vial size purely a cost-optimization decision.

Recommended Vial Size by Protocol

Tolerance testing (first-time user):

• 10mg vial — enough to confirm you tolerate daily injections before committing
• Not cost-effective past the first trial

Standard 20-day course (2 mg/day = 40 mg total):

• 1× 50mg vial — covers the full course, best per-mg value, 10mg leftover buffer
• This is the overwhelmingly most common purchase

Community high-dose (5-10 mg/day × 10 days):

• 1× 50mg or 2× 50mg vials — depending on whether you're running 50mg or 100mg total
• The 50mg vial at high-dose lasts 5-10 days, inside the window

Annual protocol (2 courses/year):

• 2× 50mg vials — one per course, easiest storage
• Often available at a bundle discount

Buying Multiple Smaller vs One Large Vial

Our recommendation: Unless you're testing tolerance for the first time, the 50mg vial is almost always the correct choice — it's the only size that matches the standard course length and it's dramatically cheaper per mg.

Vendor Evaluation Methodology

When comparing epitalon vendors, we evaluate three weighted factors:

Price Competitiveness (40%)

We normalize to cost per milligram for fair comparison across vial sizes. Because the 50mg vial is so dominant, this typically comes down to comparing 50mg pricing across vendors.

COA & Testing (30%)

We verify that COAs are:

• From recognized third-party labs
• Recent (within the last 6 months)
• Verifiable on the lab's website
• Confirming the 390.35 Da molecular weight and AEDG sequence

Reputation (30%)

Community feedback from peptide forums, shipping reliability, customer service responsiveness, and business track record. We give additional weight to vendors with consistent multi-year operations and clear labeling that distinguishes epitalon from epithalamin.

Shipping and Storage

What to Expect When Your Order Arrives

Lyophilized epitalon should arrive as a white or off-white powder cake in a sealed glass vial. Check:

• Vial integrity — no cracks, proper rubber seal, aluminum cap intact
• Powder appearance — solid cake or loose powder, NOT liquid or discolored
• Labeling — batch/lot number, milligram content, "for research use only"
• Cold pack — reputable vendors ship with cold packs in summer months

Storage Guidelines

Key point: Keep unreconstituted vials refrigerated. Epitalon is one of the more stable peptides once reconstituted, but standard BAC water rules still apply.

Frequently Asked Questions

Is epitalon legal to buy?

Epitalon is sold as a research chemical and is legal to purchase in most jurisdictions for research purposes. It is a prescription pineal bioregulator in Russia and some Eastern European countries but is not FDA-approved in the United States. Research vendors label product "not for human consumption."

How much does a full course cost?

A standard 20-day course at 2 mg/day requires 40 mg total. A single 50mg vial covers this and typically runs $80-200 at reputable vendors. Running two courses per year (spring and fall) means ~$160-400/year total.

What vial size should I buy?

The 50mg vial is the correct choice for almost every user — it matches the standard course total (40 mg), offers the best $/mg value, and leaves 10mg of buffer. Only choose 10mg for tolerance testing; the per-mg premium is extreme.

What purity should I look for?

Look for vendors providing third-party COA testing showing 98%+ purity via HPLC, plus mass spec confirming the 390.35 Da molecular weight of the AEDG tetrapeptide. Epitalon is cheap and simple to make correctly — there's no excuse for skipped testing.

Can I buy epitalon from a pharmacy?

Not in the United States. Epitalon is available as a prescription pineal peptide bioregulator (marketed as Epithalamin) in Russia and some Eastern European countries. In the U.S. and most Western markets, it's only available through research peptide vendors.

How do I know if a vendor is trustworthy?

Check for: third-party COA testing, verifiable lab results, responsive customer service, community reputation on peptide forums, consistent pricing, and a clear return/reship policy. See our Best Epitalon Vendors for pre-vetted options.

Related Guides

• Best Epitalon Vendors — ranked vendor comparison with live pricing
• Epitalon Dosing Guide — 2 mg/day standard and high-dose protocols
• Epitalon Benefits — telomerase, sleep, and longevity effects
• Epitalon Results Timeline — week-by-week expectations
• Compare Epitalon Prices by $/mg — every vendor ranked side by side
• Calculate Your Epitalon Cycle Cost — estimate vials needed and total cost
• Current Peptide Deals & Coupons — active vendor discount codes

Related Reading

• How Peptides Work — tetrapeptide bioregulators in context
• Where to Buy SS-31 — another longevity-focused research peptide

References

This article is for educational and informational purposes only. It is not medical advice and should not be used to diagnose, treat, or prevent any condition. Consult a licensed healthcare provider before using any peptide.