§ Comparison
Retatrutide vs Semax
Side-by-side price comparison across every tracked vendor. Updated every 4–6 hours.
Retatrutide
14
vendors tracked
from $2.90/mg
Semax
23
vendors tracked
from $2.52/mg
◎ Cheapest $/mg:Semax at $2.52/mg
Retatrutide
Triple GCG/GIP/GLP-1 agonist
B-
Operational$29.00
$2.90/mg
In stockOn sale
B
Operational$54.50
$5.45/mg
In stock▲ 87.9% vs best
B-
Operational$78.00
$7.80/mg
Out of stock▲ 169.0% vs best
B-
Operational$79.00
$7.90/mg
In stock▲ 172.4% vs best
Watch
$103.99
$10.40/mg
In stock▲ 258.6% vs best
Operational
$107.25
$10.72/mg
In stock▲ 269.8% vs best
B-
Operational$109.00
$10.90/mg
In stock▲ 275.9% vs best
Watch
$109.00
$10.90/mg
In stock▲ 275.9% vs best
Operational
$109.99
$11.00/mg
Out of stock▲ 279.3% vs best
Watch
$129.99
$13.00/mg
Out of stock▲ 348.2% vs best
Operational
$188.99
$18.90/mg
In stock▲ 551.7% vs best
| Vendor | Grade | Risk | Price | $/mg | Trend | Stock | |
|---|---|---|---|---|---|---|---|
| RetaOneLabs US | B- | Operational | $29.00 On sale | $2.90 | In stock | Buy with code → | |
| Welli Labs US | B | Operational | $54.50 ▲ 87.9% | $5.45 | In stock | Visit → | |
| Purus Peptides US | B- | Operational | $78.00 ▲ 169.0% | $7.80 | Out | Visit → | |
| Lab Sourced US | B- | Operational | $79.00 ▲ 172.4% | $7.90 | In stock | Visit → | |
| Australian Peptide Store AU | B- | Watch | $103.99 ▲ 258.6% | $10.40 | In stock | Visit → | |
| Australian Peptides AU | B- | Operational | $107.25 ▲ 269.8% | $10.72 | In stock | Visit → | |
| Atomik Labz US | B- | Operational | $109.00 ▲ 275.9% | $10.90 | In stock | Visit → | |
| Solution Peptides US | B- | Watch | $109.00 ▲ 275.9% | $10.90 | In stock | Visit → | |
| One Day Compounds US | B- | Operational | $109.99 ▲ 279.3% | $11.00 | Out | Visit → | |
| Felix Chemical Supply US | B- | Watch | $129.99 ▲ 348.2% | $13.00 | Out | Visit → | |
| Research Peptides Europe EU | A | Operational | $188.99 ▲ 551.7% | $18.90 | In stock | Visit → |
Sort:
Last crawl 2026-05-04Sort:
2026-05-04Semax
Nootropic ACTH fragment
Operational
$19.43
$3.89/mg
In stock◎ Best $/mg
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 → | |
| Modified Aminos US | B- | Watch | $39.99 ▲ 105.8% | $8.00 | In stock | Visit → |
Sort:
Last crawl 2026-05-04Sort:
2026-05-04About Retatrutide
An investigational triple-agonist targeting GLP-1, GIP, and glucagon receptors. Phase 3 clinical trials for obesity are ongoing; research-compound version is sold via research-chemical vendors.
About Semax
A synthetic heptapeptide based on an ACTH(4-10) fragment. Studied in Russian neurology for neuroprotection and cognitive enhancement.