Vendor review
Penguin Peptides reviews
Penguin Peptides reviews from 9 independent lab tests (Tirzepatide and Retatrutide): grade A, purity and fill accuracy. Is Penguin Peptides legit? See what its vials showed.
Grade A9 independent lab tests34 peptides listedTrustpilot 4.8/5 (200 reviews)Ships from United StatesVisit website
What the lab tests show
9 tests on record, newest first. Scores are purity divided by ten.
| Date | Product | Purity | Quantity | Identity | Certificate |
|---|---|---|---|---|---|
| Aug 6, 2026 | Tirzepatide | 99.9 % | 40.6 mg of 20 mg (103 %) | Pass | View |
| Jul 20, 2026 | Retatrutide | 5 mg | Fail | View | |
| Jul 10, 2026 | Retatrutide | 10 mg | Fail | View | |
| Jun 16, 2026 | Tirzepatide | 99.9 % | 4.78 mg of 5 mg (-4 %) | Pass | View |
| Jun 1, 2026 | Tirzepatide | 99.9 % | 59.6 mg of 60 mg (-1 %) | Pass | View |
| Mar 17, 2026 | Retatrutide | 99.6 % | 5.2 mg of 5 mg (4 %) | Pass | View |
| Mar 4, 2026 | Tirzepatide | 98.9 % | 4.96 mg of 5 mg (-1 %) | Pass | View |
| Jan 19, 2026 | Tirzepatide | 99.95 % | 5.09 mg of 5 mg (2 %) | Pass | View |
| Oct 23, 2025 | Tirzepatide | 99.95 % | 53.6 mg of 50 mg (7 %) | Pass | View |
What Penguin Peptides sells
Current listings from the vendor's own store, by peptide.
5-Amino-1MQ
from $1.74/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $37.00 | $7.40/mg | In stock | View |
| 50 mg | $87.00 | $1.74/mg | In stock | View |
BPC-157
from $6.20/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $42.00 | $8.40/mg | In stock | View |
| 10 mg | $62.00 | $6.20/mg | In stock | View |
CJC-1295
from $11.00/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $55.00 | $11.00/mg | In stock | View |
| 5 mg | $57.00 | $11.40/mg | In stock | View |
GHK-Cu
from $0.74/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 50 mg | $54.00 | $1.08/mg | In stock | View |
| 100 mg | $74.00 | $0.74/mg | In stock | View |
Glutathione
from $0.05/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 600 mg | $47.00 | $0.08/mg | In stock | View |
| 1500 mg | $72.00 | $0.05/mg | Out of stock | View |
Ipamorelin
from $6.00/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $39.00 | $7.80/mg | In stock | View |
| 10 mg | $60.00 | $6.00/mg | In stock | View |
| 10 mg | $119.00 | $11.90/mg | In stock | View |
Kisspeptin
from $7.20/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $52.00 | $10.40/mg | In stock | View |
| 10 mg | $72.00 | $7.20/mg | In stock | View |
Melanotan II
from $5.20/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 10 mg | $52.00 | $5.20/mg | In stock | View |
MOTS-c
from $4.92/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 10 mg | $65.00 | $6.50/mg | In stock | View |
| 20 mg | $110.00 | $5.50/mg | In stock | View |
| 40 mg | $197.00 | $4.92/mg | In stock | View |
NAD+
from $0.12/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 100 mg | $30.00 | $0.30/mg | In stock | View |
| 500 mg | $65.00 | $0.13/mg | In stock | View |
| 1000 mg | $119.00 | $0.12/mg | In stock | View |
Retatrutide
from $4.79/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $64.00 | $12.80/mg | In stock | View |
| 10 mg | $118.00 | $11.80/mg | In stock | View |
| 10 mg | $164.00 | $16.40/mg | In stock | View |
| 15 mg | $147.00 | $9.80/mg | In stock | View |
| 20 mg | $190.00 | $9.50/mg | Out of stock | View |
| 20 mg | $260.00 | $13.00/mg | In stock | View |
| 30 mg | $220.00 | $7.33/mg | In stock | View |
| 30 mg | $360.00 | $12.00/mg | In stock | View |
| 40 mg | $250.00 | $6.25/mg | Out of stock | View |
| 50 mg | $290.00 | $5.80/mg | In stock | View |
| 60 mg | $300.00 | $5.00/mg | In stock | View |
| 100 mg | $479.00 | $4.79/mg | In stock | View |
Selank
from $8.50/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $52.00 | $10.40/mg | In stock | View |
| 10 mg | $85.00 | $8.50/mg | In stock | View |
Semax
from $8.50/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $55.00 | $11.00/mg | In stock | View |
| 10 mg | $85.00 | $8.50/mg | In stock | View |
Sermorelin
from $6.70/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $67.00 | $13.40/mg | In stock | View |
| 10 mg | $67.00 | $6.70/mg | In stock | View |
TB-500
from $7.00/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 2 mg | $30.00 | $15.00/mg | In stock | View |
| 5 mg | $42.00 | $8.40/mg | In stock | View |
| 10 mg | $70.00 | $7.00/mg | In stock | View |
Tesamorelin
from $6.25/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $45.00 | $9.00/mg | In stock | View |
| 10 mg | $75.00 | $7.50/mg | In stock | View |
| 20 mg | $125.00 | $6.25/mg | In stock | View |
Thymosin Alpha-1
from $9.70/mg| Size | Price | Per mg | Stock | |
|---|---|---|---|---|
| 5 mg | $59.00 | $11.80/mg | In stock | View |
| 10 mg | $97.00 | $9.70/mg | In stock | View |
About Penguin Peptides
Finnrick has tested 9 samples from Penguin Peptides across 2 products.