Buy Peptides Online
Shop 139 research-grade peptides for sale — Retatrutide, Tirzepatide, BPC-157, GHK-Cu, MOTS-c, Epitalon and more. ≥98% HPLC verified, fast US shipping, free over $200.
139
Peptides for sale
Full Phiogen catalog
≥98%
HPLC purity
Verified on every batch
$200+
Free shipping
Fast US delivery
Best Sellers
- Retatrutide
- From $134.99
- Tirzepatide
- From $134.99
- Semaglutide
- From $44.99
- BPC-157
- $53.99
- TB-500
- $53.99
- GHK-Cu
- From $45.00
Welcome to Peptide Scientists
Peptide Scientists is an online store for research-grade peptides. We carry 139 compounds in stock — from the GLP-1 metabolic family like Retatrutide and Tirzepatide to recovery peptides such as BPC-157 and TB-500, growth hormone secretagogues, longevity bioregulators, and cognitive neuropeptides.
Every batch is sourced from Phiogen, our verified Reykjavík-based supplier, and verified at ≥98% purity by HPLC with a certificate of analysis available on request. Orders ship fast from the US with tracking on every package, and shipping is free on orders over $200.
Best Sellers
Most-purchased peptides on Peptide Scientists
Shop by Goal
Find the right peptide for your research focus
Metabolic Research
Retatrutide, Tirzepatide, Semaglutide, Cagrilintide — the GLP-1 family for metabolic research.
Shop nowRecovery & Healing
BPC-157, TB-500, IGF-1 LR3, KPV — tendon, gut, and tissue repair compounds.
Shop nowSkin & Aesthetics
GHK-Cu, SNAP-8, Melanotan, GLOW Blend — collagen, melanogenesis, and skin quality peptides.
Shop nowGrowth Hormone
Ipamorelin, CJC-1295, Sermorelin, Tesamorelin, GHRP — secretagogue stack for GH research.
Shop nowLongevity & Anti-Aging
Epitalon, NAD+, MOTS-c, FOXO4-DRI, SS-31 — telomere and mitochondrial health compounds.
Shop nowNootropics & Cognitive
Selank, Semax, P21, DSIP, PE-22-28 — neuropeptides for cognitive and stress research.
Shop nowThe Largest Peptide Catalog Online
139
Peptides for Sale
Across 10 categories
≥98%
HPLC Purity
Verified per batch
$8.99
Starting Price
From entry vials
Peptide Scientists carries the most comprehensive peptide catalog online — 139 compounds spanning metabolic, recovery, skin and aesthetics, growth hormone, longevity, nootropics, hormonal research, and the full Khavinson bioregulator series. Every product is sourced from Phiogen, our verified Reykjavík-based supplier with ≥98% HPLC purity verification on every batch and full certificates of analysis on request.
≥98% HPLC Verified
Every batch comes with a certificate of analysis showing ≥98% purity via HPLC. Sourced from Phiogen, our verified Reykjavík supplier.
Free US Shipping
Free shipping on every order over $200. Fast 1-2 day handling, 2-5 day USPS/UPS transit, with tracking on every order.
139 Peptides In Stock
From Retatrutide and Tirzepatide to bioregulators and nootropics — the largest research peptide catalog online. 30-day return policy.
Start Shopping
139 research-grade peptides in stock. ≥98% HPLC purity verified. Free shipping on orders over $200. Fast US delivery with tracking.