Nootropic peptide
Semax.
7 vendors · $29–89
ACTH(4-10) analog. Investigated for cognitive and neuroprotective effects.
Live vendor register · grouped by strength
Every vendor. Cheapest per mg first, kits listed separately.
SEMAX · price per mg
7 listings · unflagged vendors first · Listings data last updated October 2026
Best price per mg: Peptide Pros 30 mg at $1.93/mg.
10 mg
4 listings01
PepsupVID-PEPSUP · €24.99 · duties on delivery
10 mg
99%
No COA published (mfr claim 99%+)
Low stock
NL dispatch · PostNL Tracked 2–5 business days
$2.90/mg
$29
02
Hydro ResearchVID-HYDRO-RE · US dispatch · lot content 11.91 mg/10 mg
10 mg
99.59%
HPLC (Janoshik, lot HY-SEMX-5V9C, Feb 2026) · Chromate RP-HPLC · endotoxin · heavy metals · sterility
In stock
Same/next-business-day dispatch · FedEx 2-Day
$3.50/mg
$35
03
Direct PeptidesVID-DIRECT-P · US dispatch · single vial
10 mg
99.44%
UPLC-MS + endotoxin (Horizon Analytical, lot DPS-7576472)
In stock
UPS Ground 2–5 business days (free)
$3.90/mg
$39
04
Vyal LabsVID-VYAL-LAB · US dispatch · lot XA10 content 8.3 mg/10 mg
10 mg
99.08%
HPLC · MS · Accurate Test Labs (per-lot COA)
In stock
Same-day dispatch (before 2 PM EST) · 2–3 days
$8.90/mg
$89
25 mg
1 listing01
Core PeptidesVID-CORE-PEP · US dispatch
25 mg
99%
No certificate on the product page (vendor-wide claim: every batch HPLC-tested by Vanguard Laboratory, average purity above 99%)
In stock
Same-day dispatch
$2.52/mg
$63
30 mg
2 listings01
Peptide ProsVID-PEPTIDE- · US dispatch · sale price
30 mg
99%
No certificate for this compound in the vendor COA library (checked 2026-10-30); purity is the listing figure
In stock
Same-day dispatch
$1.93/mg
$58
Same research area
Similar compounds.
Long-form research guide
Cognitive Enhancement Research. Mechanism + protocols + safety.
BDNF, neuroplasticity, and anxiolytic mechanisms in nootropic peptide research
Open the long-form guide for Semax →