The Peptide Plug

Semax price comparison

Also sold as Semax - complete nasal spray kit, N-Acetyl Semax Amidate — | Stabilized Analog

For 100mg of Semax, the lowest total is Peptide Partners at $155.70 ($1.30 per mg, as 2 × 2-pack of 30mg), including code PLUG (10% off) and $9.90 shipping. Next: FirstForm Peptides at $158.95, then Blank Peptides at $160. We track 13 vendors carrying it.

Prices verified November 14, 2026 at 01:19 UTC · US shipping · USD

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Vendor10mg 100mgPer mg Codes appliedTesting
Peptide Partnersprofile $82.80 $155.70 ships 120mg: 2 × 2-pack of 30mg $1.30 PLUG 10% Purity, Endotoxin, Metals
FirstForm Peptidesprofile $41.99 $158.95 $1.59 PLUG 10% + B2G1 buy 2 get 1 free Purity, Endotoxin, Metals
Blank Peptidesprofile $30 $160 $1.60 BLACKFRIDAY 50% + PLUG 10% Purity, Endotoxin
Glacier Aminosprofile $51.88 $163.96 $1.64 PLUG 10% Purity, Endotoxin, Metals
Crush Researchprofile $32.70 $201 $2.01 PLUG 10% Purity, Endotoxin, Metals
Puratek Peptidesprofile $36.64 $207.58 $2.08 THEPEPTIDEPLUG 10% Purity, Endotoxin, Metals*
Peptide Supply Coprofile $46.20 $214.50 $2.15 PLUG 10% Purity, Endotoxin*
Real Peptidesprofile $32.99 $217.31 $2.17 — Purity, Endotoxin*
Orbitrexprofile $61.23 $250.72 $2.51 PLUG 15% Purity, Endotoxin, Metals*
PeptidePlugsprofile $56 $270 $2.70 PLUG 10% first order only Purity, Endotoxin, Metals*
Revitalized Researchprofile $44.98 $314.92 $3.15 PLUG 25% Purity, Endotoxin
Forge Performanceprofile $46 $324 $3.24 PLUG 10% Purity, Endotoxin, Metals
Regenerative Researchprofile $93.70 $359.12 ships 104mg: 13 × 8mg $3.45 PLUG 15% Purity, Endotoxin, Metals*

Totals come from the same optimizer as our comparison tool: each vendor's cheapest way to supply the amount, with its multi-vial and mix-and-match discounts, the discount codes we hold for that vendor, and shipping to the US. Vendors reach each amount with whatever vial sizes they sell, and a vendor without a matching size may ship slightly more. Codes marked "first order only" assume a first order. "Per mg" is for the 100mg total. Confirm the final price at checkout. *Testing marked with an asterisk is present on some batches, not all.

Buy at Peptide Partners — code PLUG → See the full breakdown →

Semax prices by vial strength

StrengthVendorsSingle vial 10-vial kitPer mg (kit)
8mg 1 $55.45 · Regenerative Research $276.25 · Regenerative Research $3.45
10mg 11 $30 · Blank Peptides $158.95 · FirstForm Peptides $1.59
30mg 2 $82.48 · Orbitrex $289.35 · Peptide Partners $0.965

Each strength is priced using only that vial size (single vials or packs of it), the same as choosing that size in the comparison tool. Totals include multi-vial discounts, our discount codes and US shipping.

Quick answers

What is the cheapest Semax?

It depends on how much you buy, because most vendors discount multi-vial orders. For 10mg, Blank Peptides is lowest at $30 total. For 100mg, Peptide Partners is lowest at $155.70 total ($1.30 per mg), including code PLUG (10% off) and $9.90 shipping.

What is the cheapest Semax with endotoxin testing on every batch?

For 100mg, the lowest total overall — Peptide Partners at $155.70 — is also from a vendor that publishes endotoxin testing on every batch. 11 of the 13 vendors do.

What strengths does Semax come in, and what does a 10-vial kit cost?

Semax is sold in 8mg, 10mg and 30mg vials. 8mg × 10: Regenerative Research at $276.25 ($3.45 per mg); 10mg × 10: FirstForm Peptides at $158.95 ($1.59 per mg); 30mg × 10: Peptide Partners at $289.35 ($0.965 per mg).

Which Semax vendors test for heavy metals?

Peptide Partners, FirstForm Peptides, Glacier Aminos, Crush Research and Forge Performance publish heavy-metals testing on every batch. Puratek Peptides, Orbitrex, PeptidePlugs and Regenerative Research publish it on some batches.

How much does Semax cost?

For 100mg, totals run from $155.70 to $359.12 across 13 vendors — $1.30 to $3.45 per mg — including each vendor's multi-vial discounts, our discount codes and shipping. Before any discounts, list prices run from $1.03 to $6.25 per mg.

More price comparisons

Research use only. Semax is sold as a laboratory research chemical. It is not approved for human consumption and nothing on this page is medical advice or a recommendation to use it.