Vendor comparison
Catalyst Peptides vs Nordsci Peptides
Catalyst Peptides is cheaper per mg on 27 of the 36 peptides they share; Nordsci Peptides on 6, the same price on 3.
Across all 36, Catalyst Peptides’s price per mg is a median 28% lower than Nordsci Peptides’s.
- Listings on the index
- 55
- Cheaper per mg on
- 27 of 36 shared
- Certificates of analysis on file
- none yet
- Ships from
- not stated
- Latest price check
- 21 Oct 2026
- Listings on the index
- 60
- Cheaper per mg on
- 6 of 36 shared
- Certificates of analysis on file
- none yet
- Ships from
- not stated
- Latest price check
- 5 Nov 2026
Retail 36
Purchases of fewer than 10 vials.
- AICAR
Catalyst Peptides
$1.12/mg
50 mg · $56.00
checked 21 Oct 2026
Nordsci Peptides
$1.30/mg
50 mg · $65.00
checked 5 Nov 2026
Catalyst Peptides 14% cheaper
- AOD-9604
Catalyst Peptides
$9.60/mg
10 mg · $96.00
checked 21 Oct 2026
Nordsci Peptides
$13.00/mg
5 mg · $65.00
checked 5 Nov 2026
Catalyst Peptides 26% cheaper
- ARA-290
Catalyst Peptides
$5.90/mg
10 mg · $59.00
checked 21 Oct 2026
Nordsci Peptides
$5.94/mg
16 mg · $95.00
checked 5 Nov 2026
Catalyst Peptides 1% cheaper
- BPC-157
Catalyst Peptides
$5.40/mg
10 mg · $54.00
checked 21 Oct 2026
Nordsci Peptides
$9.33/mg
15 mg · $140.00
checked 5 Nov 2026
Catalyst Peptides 42% cheaper
- DSIP
Catalyst Peptides
$5.20/mg
10 mg · $52.00
checked 21 Oct 2026
Nordsci Peptides
$10.00/mg
5 mg · $50.00
checked 5 Nov 2026
Catalyst Peptides 48% cheaper
- Epithalon
Catalyst Peptides
$3.15/mg
10 mg · $31.50
checked 21 Oct 2026
Nordsci Peptides
$4.30/mg
50 mg · $215.00
checked 5 Nov 2026
Catalyst Peptides 27% cheaper
- FOXO4-DRI
Catalyst Peptides
$31.50/mg
10 mg · $315.00
checked 21 Oct 2026
Nordsci Peptides
$30.00/mg
10 mg · $300.00
checked 5 Nov 2026
Nordsci Peptides 5% cheaper
- GHK-Cu
Catalyst Peptides
$0.700/mg
100 mg · $70.00
checked 21 Oct 2026
Nordsci Peptides
$1.40/mg
50 mg · $70.00
checked 5 Nov 2026
Catalyst Peptides 50% cheaper
- GHRP-2
Catalyst Peptides
$5.00/mg
10 mg · $50.00
checked 21 Oct 2026
Nordsci Peptides
$5.00/mg
10 mg · $50.00
checked 5 Nov 2026
Same price
- GHRP-6
Catalyst Peptides
$5.00/mg
10 mg · $50.00
checked 21 Oct 2026
Nordsci Peptides
$5.00/mg
10 mg · $50.00
checked 5 Nov 2026
Same price
- Glutathione
Catalyst Peptides
$0.051/mg
1500 mg · $77.00
checked 21 Oct 2026
Nordsci Peptides
$0.142/mg
600 mg · $85.00
checked 5 Nov 2026
Catalyst Peptides 64% cheaper
- Hexarelin
Catalyst Peptides
$13.00/mg
5 mg · $65.00
checked 21 Oct 2026
Nordsci Peptides
$9.20/mg
5 mg · $46.00
checked 5 Nov 2026
Nordsci Peptides 29% cheaper
- IGF-1 LR3
Catalyst Peptides
$75.00/mg
1 mg · $75.00
checked 21 Oct 2026
Nordsci Peptides
$110.00/mg
1 mg · $110.00
checked 5 Nov 2026
Catalyst Peptides 32% cheaper
- Ipamorelin
Catalyst Peptides
$5.60/mg
10 mg · $56.00
checked 21 Oct 2026
Nordsci Peptides
$8.00/mg
10 mg · $80.00
checked 5 Nov 2026
Catalyst Peptides 30% cheaper
- Kisspeptin
Catalyst Peptides
$5.25/mg
10 mg · $52.50
checked 21 Oct 2026
Nordsci Peptides
$13.00/mg
5 mg · $65.00
checked 5 Nov 2026
Catalyst Peptides 60% cheaper
- KPV
Catalyst Peptides
$4.50/mg
10 mg · $45.00
checked 21 Oct 2026
Nordsci Peptides
$11.00/mg
5 mg · $55.00
checked 5 Nov 2026
Catalyst Peptides 59% cheaper
- LL-37
Catalyst Peptides
$11.40/mg
5 mg · $57.00
checked 21 Oct 2026
Nordsci Peptides
$19.00/mg
5 mg · $95.00
checked 5 Nov 2026
Catalyst Peptides 40% cheaper
- Melanotan 2
Catalyst Peptides
$3.80/mg
10 mg · $38.00
checked 21 Oct 2026
Nordsci Peptides
$5.00/mg
10 mg · $50.00
checked 5 Nov 2026
Catalyst Peptides 24% cheaper
- MGF
Catalyst Peptides
$25.00/mg
2 mg · $50.00
checked 21 Oct 2026
Nordsci Peptides
$30.00/mg
5 mg · $150.00
checked 5 Nov 2026
Catalyst Peptides 17% cheaper
- MOTS-C
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Nordsci Peptides
$11.00/mg
10 mg · $110.00
checked 5 Nov 2026
Catalyst Peptides 62% cheaper
- NAD+
Catalyst Peptides
$0.087/mg
1000 mg · $87.50
checked 21 Oct 2026
Nordsci Peptides
$0.300/mg
1000 mg · $300.00
checked 5 Nov 2026
Catalyst Peptides 71% cheaper
- Oxytocin
Catalyst Peptides
$4.50/mg
10 mg · $45.00
checked 21 Oct 2026
Nordsci Peptides
$6.50/mg
10 mg · $65.00
checked 5 Nov 2026
Catalyst Peptides 31% cheaper
- P21
Catalyst Peptides
$29.90/mg
10 mg · $299.00
checked 21 Oct 2026
Nordsci Peptides
$24.00/mg
5 mg · $120.00
checked 5 Nov 2026
Nordsci Peptides 20% cheaper
- PE-22-28
Catalyst Peptides
$5.00/mg
10 mg · $50.00
checked 21 Oct 2026
Nordsci Peptides
$7.50/mg
8 mg · $60.00
checked 5 Nov 2026
Catalyst Peptides 33% cheaper
- PEG-MGF
Catalyst Peptides
$24.00/mg
2 mg · $48.00
checked 21 Oct 2026
Nordsci Peptides
$19.00/mg
5 mg · $95.00
checked 5 Nov 2026
Nordsci Peptides 21% cheaper
- Pinealon
Catalyst Peptides
$6.50/mg
10 mg · $65.00
checked 21 Oct 2026
Nordsci Peptides
$3.75/mg
20 mg · $75.00
checked 5 Nov 2026
Nordsci Peptides 42% cheaper
- PNC-27
Catalyst Peptides
$7.20/mg
10 mg · $72.00
checked 21 Oct 2026
Nordsci Peptides
$30.00/mg
5 mg · $150.00
checked 5 Nov 2026
Catalyst Peptides 76% cheaper
- Selank
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Nordsci Peptides
$11.00/mg
5 mg · $55.00
checked 5 Nov 2026
Catalyst Peptides 62% cheaper
- Semax
Catalyst Peptides
$4.20/mg
10 mg · $42.00
checked 21 Oct 2026
Nordsci Peptides
$7.50/mg
10 mg · $75.00
checked 5 Nov 2026
Catalyst Peptides 44% cheaper
- Sermorelin
Catalyst Peptides
$8.40/mg
10 mg · $84.00
checked 21 Oct 2026
Nordsci Peptides
$11.00/mg
5 mg · $55.00
checked 5 Nov 2026
Catalyst Peptides 24% cheaper
- TB-500
Catalyst Peptides
$6.50/mg
10 mg · $65.00
checked 21 Oct 2026
Nordsci Peptides
$16.00/mg
10 mg · $160.00
checked 5 Nov 2026
Catalyst Peptides 59% cheaper
- Testagen
Catalyst Peptides
$3.85/mg
20 mg · $77.00
checked 21 Oct 2026
Nordsci Peptides
$3.75/mg
20 mg · $75.00
checked 5 Nov 2026
Nordsci Peptides 3% cheaper
- Thymalin
Catalyst Peptides
$6.00/mg
10 mg · $60.00
checked 21 Oct 2026
Nordsci Peptides
$6.00/mg
20 mg · $120.00
checked 5 Nov 2026
Same price
- Thymosin Alpha-1
Catalyst Peptides
$7.80/mg
10 mg · $78.00
checked 21 Oct 2026
Nordsci Peptides
$13.00/mg
10 mg · $130.00
checked 5 Nov 2026
Catalyst Peptides 40% cheaper
- Vilon
Catalyst Peptides
$3.00/mg
20 mg · $60.00
checked 21 Oct 2026
Nordsci Peptides
$3.75/mg
20 mg · $75.00
checked 5 Nov 2026
Catalyst Peptides 20% cheaper
- VIP
Catalyst Peptides
$12.00/mg
10 mg · $120.00
checked 21 Oct 2026
Nordsci Peptides
$12.50/mg
6 mg · $75.00
checked 5 Nov 2026
Catalyst Peptides 4% cheaper
| Peptide | Catalyst Peptides | Nordsci Peptides | Difference per mg |
|---|---|---|---|
| AICAR | $1.12/mg 50 mg · $56.00 checked 21 Oct 2026 | $1.30/mg 50 mg · $65.00 checked 5 Nov 2026 | Catalyst Peptides 14% cheaper |
| AOD-9604 | $9.60/mg 10 mg · $96.00 checked 21 Oct 2026 | $13.00/mg 5 mg · $65.00 checked 5 Nov 2026 | Catalyst Peptides 26% cheaper |
| ARA-290 | $5.90/mg 10 mg · $59.00 checked 21 Oct 2026 | $5.94/mg 16 mg · $95.00 checked 5 Nov 2026 | Catalyst Peptides 1% cheaper |
| BPC-157 | $5.40/mg 10 mg · $54.00 checked 21 Oct 2026 | $9.33/mg 15 mg · $140.00 checked 5 Nov 2026 | Catalyst Peptides 42% cheaper |
| DSIP | $5.20/mg 10 mg · $52.00 checked 21 Oct 2026 | $10.00/mg 5 mg · $50.00 checked 5 Nov 2026 | Catalyst Peptides 48% cheaper |
| Epithalon | $3.15/mg 10 mg · $31.50 checked 21 Oct 2026 | $4.30/mg 50 mg · $215.00 checked 5 Nov 2026 | Catalyst Peptides 27% cheaper |
| FOXO4-DRI | $31.50/mg 10 mg · $315.00 checked 21 Oct 2026 | $30.00/mg 10 mg · $300.00 checked 5 Nov 2026 | Nordsci Peptides 5% cheaper |
| GHK-Cu | $0.700/mg 100 mg · $70.00 checked 21 Oct 2026 | $1.40/mg 50 mg · $70.00 checked 5 Nov 2026 | Catalyst Peptides 50% cheaper |
| GHRP-2 | $5.00/mg 10 mg · $50.00 checked 21 Oct 2026 | $5.00/mg 10 mg · $50.00 checked 5 Nov 2026 | Same price |
| GHRP-6 | $5.00/mg 10 mg · $50.00 checked 21 Oct 2026 | $5.00/mg 10 mg · $50.00 checked 5 Nov 2026 | Same price |
| Glutathione | $0.051/mg 1500 mg · $77.00 checked 21 Oct 2026 | $0.142/mg 600 mg · $85.00 checked 5 Nov 2026 | Catalyst Peptides 64% cheaper |
| Hexarelin | $13.00/mg 5 mg · $65.00 checked 21 Oct 2026 | $9.20/mg 5 mg · $46.00 checked 5 Nov 2026 | Nordsci Peptides 29% cheaper |
| IGF-1 LR3 | $75.00/mg 1 mg · $75.00 checked 21 Oct 2026 | $110.00/mg 1 mg · $110.00 checked 5 Nov 2026 | Catalyst Peptides 32% cheaper |
| Ipamorelin | $5.60/mg 10 mg · $56.00 checked 21 Oct 2026 | $8.00/mg 10 mg · $80.00 checked 5 Nov 2026 | Catalyst Peptides 30% cheaper |
| Kisspeptin | $5.25/mg 10 mg · $52.50 checked 21 Oct 2026 | $13.00/mg 5 mg · $65.00 checked 5 Nov 2026 | Catalyst Peptides 60% cheaper |
| KPV | $4.50/mg 10 mg · $45.00 checked 21 Oct 2026 | $11.00/mg 5 mg · $55.00 checked 5 Nov 2026 | Catalyst Peptides 59% cheaper |
| LL-37 | $11.40/mg 5 mg · $57.00 checked 21 Oct 2026 | $19.00/mg 5 mg · $95.00 checked 5 Nov 2026 | Catalyst Peptides 40% cheaper |
| Melanotan 2 | $3.80/mg 10 mg · $38.00 checked 21 Oct 2026 | $5.00/mg 10 mg · $50.00 checked 5 Nov 2026 | Catalyst Peptides 24% cheaper |
| MGF | $25.00/mg 2 mg · $50.00 checked 21 Oct 2026 | $30.00/mg 5 mg · $150.00 checked 5 Nov 2026 | Catalyst Peptides 17% cheaper |
| MOTS-C | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $11.00/mg 10 mg · $110.00 checked 5 Nov 2026 | Catalyst Peptides 62% cheaper |
| NAD+ | $0.087/mg 1000 mg · $87.50 checked 21 Oct 2026 | $0.300/mg 1000 mg · $300.00 checked 5 Nov 2026 | Catalyst Peptides 71% cheaper |
| Oxytocin | $4.50/mg 10 mg · $45.00 checked 21 Oct 2026 | $6.50/mg 10 mg · $65.00 checked 5 Nov 2026 | Catalyst Peptides 31% cheaper |
| P21 | $29.90/mg 10 mg · $299.00 checked 21 Oct 2026 | $24.00/mg 5 mg · $120.00 checked 5 Nov 2026 | Nordsci Peptides 20% cheaper |
| PE-22-28 | $5.00/mg 10 mg · $50.00 checked 21 Oct 2026 | $7.50/mg 8 mg · $60.00 checked 5 Nov 2026 | Catalyst Peptides 33% cheaper |
| PEG-MGF | $24.00/mg 2 mg · $48.00 checked 21 Oct 2026 | $19.00/mg 5 mg · $95.00 checked 5 Nov 2026 | Nordsci Peptides 21% cheaper |
| Pinealon | $6.50/mg 10 mg · $65.00 checked 21 Oct 2026 | $3.75/mg 20 mg · $75.00 checked 5 Nov 2026 | Nordsci Peptides 42% cheaper |
| PNC-27 | $7.20/mg 10 mg · $72.00 checked 21 Oct 2026 | $30.00/mg 5 mg · $150.00 checked 5 Nov 2026 | Catalyst Peptides 76% cheaper |
| Selank | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $11.00/mg 5 mg · $55.00 checked 5 Nov 2026 | Catalyst Peptides 62% cheaper |
| Semax | $4.20/mg 10 mg · $42.00 checked 21 Oct 2026 | $7.50/mg 10 mg · $75.00 checked 5 Nov 2026 | Catalyst Peptides 44% cheaper |
| Sermorelin | $8.40/mg 10 mg · $84.00 checked 21 Oct 2026 | $11.00/mg 5 mg · $55.00 checked 5 Nov 2026 | Catalyst Peptides 24% cheaper |
| TB-500 | $6.50/mg 10 mg · $65.00 checked 21 Oct 2026 | $16.00/mg 10 mg · $160.00 checked 5 Nov 2026 | Catalyst Peptides 59% cheaper |
| Testagen | $3.85/mg 20 mg · $77.00 checked 21 Oct 2026 | $3.75/mg 20 mg · $75.00 checked 5 Nov 2026 | Nordsci Peptides 3% cheaper |
| Thymalin | $6.00/mg 10 mg · $60.00 checked 21 Oct 2026 | $6.00/mg 20 mg · $120.00 checked 5 Nov 2026 | Same price |
| Thymosin Alpha-1 | $7.80/mg 10 mg · $78.00 checked 21 Oct 2026 | $13.00/mg 10 mg · $130.00 checked 5 Nov 2026 | Catalyst Peptides 40% cheaper |
| Vilon | $3.00/mg 20 mg · $60.00 checked 21 Oct 2026 | $3.75/mg 20 mg · $75.00 checked 5 Nov 2026 | Catalyst Peptides 20% cheaper |
| VIP | $12.00/mg 10 mg · $120.00 checked 21 Oct 2026 | $12.50/mg 6 mg · $75.00 checked 5 Nov 2026 | Catalyst Peptides 4% cheaper |
Only at Catalyst Peptides: 19 peptides in the same market
Only at Nordsci Peptides: 24 peptides in the same market
Catalyst Peptides compared with
- Lab Ratz Research51 shared
- NHOV49 shared
- Peptides direct to you49 shared
- Peptides GG48 shared
- Huaian Hanyou Peptide47 shared
- Research1peptides47 shared
- LabFirst Peptides46 shared
- Alpha Peptides45 shared
- Vipris Biotechnology45 shared
- Nexus Bio Life44 shared
- VPeptide43 shared
- Bridge Research42 shared
- Luxe Peptides42 shared
- Pure Lab Peptides42 shared
- Eppixlabs41 shared
- Grey Axis Research41 shared
- Raw Amino41 shared
- Biotech Peptides40 shared
- Core Peptides40 shared
- Peptide Science Now40 shared
- Prime Longevity Peptides40 shared
- Amino Usa39 shared
- Cenexa Labs39 shared
- Priority Peptides39 shared
- Eros Peptides38 shared
- Grey Matters Research38 shared
- OP Labs38 shared
- Peptide Science Store37 shared
- SQS Research37 shared
- TrueLab Peptides37 shared
Nordsci Peptides compared with
- Peptide Science Store59 shared
- Peptide Science Now57 shared
- Huaian Hanyou Peptide55 shared
- Peptides direct to you52 shared
- Peptides GG52 shared
- Core Peptides51 shared
- Raw Amino51 shared
- Luxe Peptides50 shared
- Lab Ratz Research49 shared
- Amino Usa48 shared
- Prime Longevity Peptides47 shared
- NHOV45 shared
- Vipris Biotechnology45 shared
- VPeptide45 shared
- Research1peptides44 shared
- Cenexa Labs43 shared
- OP Labs43 shared
- TrueLab Peptides43 shared
- Eros Peptides42 shared
- Nexus Bio Life42 shared
- Priority Peptides42 shared
- Biotech Peptides40 shared
- Grey Matters Research39 shared
- Grey Axis Research38 shared
- LabFirst Peptides38 shared
- Pure Lab Peptides38 shared
- Eppixlabs37 shared
- Alpha Peptides34 shared
- Bridge Research34 shared
- SQS Research30 shared
Two listings are compared only when they are the same peptide in the same market, so a 10-vial kit is never set against a single vial. Price per mg is our arithmetic on the listed price, for comparison; the amount you pay is the listed price for the size shown, so check it on the vendor’s own page before you buy. What price per mg means.
No vendor can pay to change a price or the order of anything on this page. Some outbound links are affiliate links.