Peptide Referee

Masters Peptides review: is it legit?

Live Transparency score 22/100* Checked Oct 15, 2026. Visit mpeptides.com

Our findings in brief

In short: Masters Peptides scores 22/100 on the 5 of 6 checks we could complete, higher than 20% of the 192 active vendors we track. It isn't ranked until all six checks are complete (5 of 6 so far).

We haven't lab-tested anything from Masters Peptides, so this covers public evidence only, not product quality. As of Oct 15, 2026:

What's missing or unverified

Across 16 peptides that at least three vendors sell, its best prices are typically 65% above the median (0 of 16 below). Compare its prices.

At a glance

Website
mpeptides.com
Status
Live
Domain registered
Jan 31, 2026 (8 months ago)
Registrar
GoDaddy.com, LLC
Domain expires
Jan 31, 2028
First archived
No archive found
Shop platform
WooCommerce
Ships to (stated)
US
Payment (stated)
Not stated
COAs
Generic COAs only
Research-use disclaimer
Yes
Traffic rank (Tranco)
Outside the top 1 million

Transparency checks

Six checks of public information, worth 100 points. The score measures openness, not product quality. How we score.

CheckWhat we foundPointsEvidence
Domain age Registered Jan 31, 2026 (8 months old) 5/20 Registry record
Public certificates of analysis Only generic or sample COAs are public 12/25 COA page
Independent lab named on COAs No independent lab named 0/10 —
Business identity No company name or address found 0/15 —
Shipping, refund and terms pages Found: terms only 5/15 Where we looked for a shipping page · Terms
Card or PayPal payment (buyer protection) Payment methods not stated publicly 0/15 —

Total: 22/100. One check couldn't be completed and scores 0 until we can verify it.

Masters Peptides prices compared

The lowest price per milligram at Masters Peptides for each peptide, against the median listing across all vendors we track. Rank 1 = cheapest vendor for that peptide.

Peptide Masters Peptides $/mg Median $/mg vs median Price rank
GHK-Cu $1.30/mg $0.590/mg +120% 88th of 91
BPC-157 $9.00/mg $5.28/mg +71% 76th of 82
TB-500 $14.10/mg $6.17/mg +128% 76th of 80
CJC-1295 with DAC $20.00/mg $10.40/mg +92% 30th of 31
MOTS-c $5.00/mg $3.45/mg +45% 65th of 81
BPC-157 + TB-500 blend $9.00/mg $4.67/mg +93% 39th of 41
PT-141 (bremelanotide) $12.00/mg $4.00/mg +200% 66th of 66
Semax $5.10/mg $3.58/mg +42% 45th of 57
Melanotan II $10.00/mg $3.50/mg +186% 60th of 60
KLOW blend (GHK-Cu + KPV + BPC-157 + TB-500) $2.50/mg $1.57/mg +59% 15th of 16
SS-31 (elamipretide) $5.20/mg $3.55/mg +46% 38th of 47
Epitalon $3.00/mg $3.00/mg at the median 44th of 75
Thymosin Alpha-1 $12.00/mg $6.50/mg +85% 53rd of 61
5-Amino-1MQ $4.40/mg $2.90/mg +52% 46th of 57
CJC-1295 without DAC (Mod GRF 1-29) $8.00/mg $6.80/mg +18% 50th of 67
SLU-PP-332 $22.00/mg $15.60/mg +41% 17th of 18

Price index: 1.65 (1.00 = market median; lower is cheaper), across 16 peptides sold by 3+ vendors.

All 23 Masters Peptides listings, with sizes and prices
Peptide Product Size Price $/mg vs median Stock Vendor's page
5-Amino-1MQ 5-amino-1mq 50 mg $220 $4.40/mg +52% In stock View
5-Amino-1MQ 5-amino-1mq 5 mg $50 $10.00/mg +245% In stock View
BPC-157 BPC-157 20 mg $180 $9.00/mg +71% In stock View
BPC-157 BPC-157 10 mg $101 $10.10/mg +91% In stock View
BPC-157 + TB-500 blend Wolverine Blend – BPC-157 (5mg) / TB500 (5mg) (Globally Sourced) · (10mg) / (10mg) 20 mg $180 $9.00/mg +93% In stock View
BPC-157 + TB-500 blend Wolverine Blend – BPC-157 (5mg) / TB500 (5mg) (Globally Sourced) · (5mg) / (5mg) 10 mg $101 $10.10/mg +116% In stock View
CJC-1295 with DAC CJC-1295 – With DAC (5mg) 5 mg $100 $20.00/mg +92% In stock View
CJC-1295 without DAC (Mod GRF 1-29) CJC-1295 Without DAC (10mg) 10 mg $80 $8.00/mg +18% In stock View
Epitalon Epitalon 50 mg $150 $3.00/mg median In stock View
Epitalon Epitalon 10 mg $100 $10.00/mg +233% In stock View
GHK-Cu GHK-Cu 100 mg $130 $1.30/mg +120% In stock View
GHK-Cu GHK-Cu 50 mg $80 $1.60/mg +171% In stock View
KLOW blend (GHK-Cu + KPV + BPC-157 + TB-500) KLOW – GHK-Cu (50mg) / KPV (10mg) / BPC-157 (10mg) / TB500 (10mg) 80 mg $200 $2.50/mg +59% In stock View
Melanotan II Melanotan 2 (10mg) 10 mg $100 $10.00/mg +186% In stock View
MOTS-c MOTS-c 40 mg $200 $5.00/mg +45% In stock View
PT-141 (bremelanotide) PT-141 (10mg) 10 mg $120 $12.00/mg +200% In stock View
Semax Semax (10mg) 10 mg $51 $5.10/mg +42% In stock View
SLU-PP-332 SLU-PP-332 (5mg) 5 mg $110 $22.00/mg +41% In stock View
SS-31 (elamipretide) SS-31 50 mg $260 $5.20/mg +46% In stock View
SS-31 (elamipretide) SS-31 10 mg $120 $12.00/mg +238% In stock View
TB-500 Thymosin Beta 4 (TB500) 10 mg $141 $14.10/mg +128% In stock View
TB-500 Thymosin Beta 4 (TB500) 5 mg $76 $15.20/mg +146% In stock View
Thymosin Alpha-1 Thymosin Alpha 1 (TA1) (10mg) 10 mg $120 $12.00/mg +85% In stock View

Prices come from each vendor's public product feed and were last fetched Oct 15, 2026. They exclude shipping and discounts. $/mg uses the labeled amount, not measured content. How we compare prices.

Alternatives to Masters Peptides

Live vendors selling the same peptides as Masters Peptides, ranked by transparency score. Payments from vendors never affect this order.

# Vendor Status Transparency Domain age COAs Ships to Prices tracked Lab tests
1 Pure Peptide Labs Live 90/100 12 months Batch COAs public US, worldwide 44 —
2 Peptidology Live 90/100 22 months Batch COAs public US 3 —
3 Eros Peptides Live 87/100 3.4 years Generic COAs only US 14 —
4 Nationwide Peptides Live 85/100 11 months Batch COAs public US 38 —
5 Mile High Compounds Live 85/100 15 months Batch COAs public US, worldwide 2 —

Is something wrong?

If you run Masters Peptides, or you have evidence that something here is out of date, email [email protected] with a link to the evidence. We re-check within five business days and log every change on our corrections page.

Evidence we used (15)