§ Same category · Cognitive peptides
Noopept vs Semax
Side-by-side price comparison across every tracked vendor. Updated every 4–6 hours.
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Noopept
3
vendors tracked
from $2.00/mg
Semax
22
vendors tracked
from $2.33/mg
◎ Cheapest $/mg:Noopept at $2.00/mg
Noopept
Peptide-derived nootropic
B-
Watch$39.99
$2.00/mg
In stock◎ Best $/mg
| Vendor | Grade | Risk | Price | $/mg | Trend | Stock | |
|---|---|---|---|---|---|---|---|
| Modified Aminos US | B- | Watch | $39.99 ◎ Best $/mg | $2.00 | In stock | Buy with code → |
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Last crawl 2026-08-12Sort:
2026-08-12Semax
Nootropic ACTH fragment
Operational
$19.43
$3.89/mg
In stock◎ Best $/mg
Operational
$19.99
$4.00/mg
Out of stock▲ 2.9% vs best
B-
Watch$39.99
$8.00/mg
In stock▲ 105.8% vs best
| Vendor | Grade | Risk | Price | $/mg | Trend | Stock | |
|---|---|---|---|---|---|---|---|
| Research Peptides Europe EU | A | Operational | $19.43 ◎ Best $/mg | $3.89 | In stock | Buy with code → | |
| Pure Lab Peptides US | B- | Operational | $19.99 ▲ 2.9% | $4.00 | Out | Visit → | |
| Modified Aminos US | B- | Watch | $39.99 ▲ 105.8% | $8.00 | In stock | Visit → |
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Last crawl 2026-08-12Sort:
2026-08-12About Noopept
A dipeptide derivative of piracetam studied for memory enhancement and neuroprotection. Technically a pro-drug, but widely sold in peptide stores.
About Semax
A synthetic heptapeptide based on an ACTH(4-10) fragment. Studied in Russian neurology for neuroprotection and cognitive enhancement.