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Welcome to Certified-PEP —
The #1 Reviewed Peptide Site!
We sell lab-tested, research-use only peptides backed by science.
Get deals on Semaglutide, Tirzepatide, Retatrutide, NAD+, and more!
*All products are intended for research purposes only. Not for human or animal use.*
Purity First
Purity Is Our #1 Priority
Third-party verified peptides so research starts clean and stays consistent.
- ✓Identity & purity checks on every lot
- ✓Transparent specs — no mystery fillers
- ✓Fast, human support when questions pop up
Lab Tested • USA
Tested by Forever Young Pharmacies
Independent U.S. screening on each batch. COAs are posted for full transparency.
- ✓Heavy metals
- ✓Microbial/bacteria
- ✓Purity & identity
- ✓Fill weight
All current certificates of analysis are posted on the COAs page.
Save More
Bundle Deals Available Now
Shop the bundle deals below and save.
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NAD+ (3 x 700MG)
Original price was: $195.00.$180.00Current price is: $180.00. -
Reta ( 5 x 30MG)
Original price was: $1,280.00.$800.00Current price is: $800.00. -
Semaglutide (5 x 10MG)
Original price was: $680.00.$440.00Current price is: $440.00. -
Tirzepatide (5 x 30MG)
Original price was: $1,150.00.$700.00Current price is: $700.00.
