Vendor comparison
Peptide Science Now vs Research1peptides
Research1peptides is cheaper per mg on 43 of the 45 peptides they share; Peptide Science Now on 1, the same price on 1.
Across all 45, Research1peptides’s price per mg is a median 60% lower than Peptide Science Now’s.
- Listings on the index
- 69
- Cheaper per mg on
- 1 of 45 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 30 Oct 2026
- Listings on the index
- 64
- Cheaper per mg on
- 43 of 45 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 7 Nov 2026
Retail 45
Purchases of fewer than 10 vials.
- Adipotide
Peptide Science Now
$8.90/mg
10 mg · $89.00
checked 30 Oct 2026
Research1peptides
$10.00/mg
5 mg · $50.00
checked 7 Nov 2026
Peptide Science Now 11% cheaper
- AICAR
Peptide Science Now
$1.00/mg
50 mg · $50.00
checked 30 Oct 2026
Research1peptides
$0.500/mg
50 mg · $25.00
checked 7 Nov 2026
Research1peptides 50% cheaper
- AOD-9604
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
Research1peptides
$5.80/mg
5 mg · $29.00
checked 7 Nov 2026
Research1peptides 46% cheaper
- ARA-290
Peptide Science Now
$4.69/mg
16 mg · $75.00
checked 30 Oct 2026
Research1peptides
$2.70/mg
10 mg · $27.00
checked 7 Nov 2026
Research1peptides 42% cheaper
- BPC-157
Peptide Science Now
$9.33/mg
15 mg · $140.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 79% cheaper
- Cardiogen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$1.75/mg
20 mg · $35.00
checked 7 Nov 2026
Research1peptides 46% cheaper
- Cartalax
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Research1peptides
$1.50/mg
20 mg · $30.00
checked 7 Nov 2026
Research1peptides 50% cheaper
- Chonluten
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$1.75/mg
20 mg · $35.00
checked 7 Nov 2026
Research1peptides 46% cheaper
- CJC-1295 NO DAC
Peptide Science Now
$9.90/mg
5 mg · $49.50
checked 30 Oct 2026
Research1peptides
$3.50/mg
10 mg · $35.00
checked 7 Nov 2026
Research1peptides 65% cheaper
- Cortagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 38% cheaper
- DSIP
Peptide Science Now
$10.00/mg
5 mg · $50.00
checked 30 Oct 2026
Research1peptides
$2.70/mg
10 mg · $27.00
checked 7 Nov 2026
Research1peptides 73% cheaper
- Epithalon
Peptide Science Now
$3.80/mg
50 mg · $190.00
checked 30 Oct 2026
Research1peptides
$1.30/mg
50 mg · $65.00
checked 7 Nov 2026
Research1peptides 66% cheaper
- GHK-Cu
Peptide Science Now
$1.40/mg
50 mg · $70.00
checked 30 Oct 2026
Research1peptides
$0.260/mg
100 mg · $26.00
checked 7 Nov 2026
Research1peptides 81% cheaper
- GHRP-2
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
10 mg · $20.00
checked 7 Nov 2026
Research1peptides 60% cheaper
- GHRP-6
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
10 mg · $20.00
checked 7 Nov 2026
Research1peptides 60% cheaper
- Glutathione
Peptide Science Now
$0.142/mg
600 mg · $85.00
checked 30 Oct 2026
Research1peptides
$0.020/mg
1500 mg · $30.00
checked 7 Nov 2026
Research1peptides 86% cheaper
- Hexarelin
Peptide Science Now
$9.00/mg
5 mg · $45.00
checked 30 Oct 2026
Research1peptides
$4.50/mg
10 mg · $45.00
checked 7 Nov 2026
Research1peptides 50% cheaper
- hGH Fragment 176-191
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
Research1peptides
$5.00/mg
5 mg · $25.00
checked 7 Nov 2026
Research1peptides 54% cheaper
- IGF-1 LR3
Peptide Science Now
$110.00/mg
1 mg · $110.00
checked 30 Oct 2026
Research1peptides
$45.00/mg
1 mg · $45.00
checked 7 Nov 2026
Research1peptides 59% cheaper
- Ipamorelin
Peptide Science Now
$8.00/mg
10 mg · $80.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Research1peptides 69% cheaper
- Kisspeptin
Peptide Science Now
$13.00/mg
5 mg · $65.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Research1peptides 81% cheaper
- KPV
Peptide Science Now
$11.00/mg
5 mg · $55.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Research1peptides 77% cheaper
- Livagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$1.75/mg
20 mg · $35.00
checked 7 Nov 2026
Research1peptides 46% cheaper
- LL-37
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Research1peptides
$7.00/mg
5 mg · $35.00
checked 7 Nov 2026
Research1peptides 63% cheaper
- Melanotan 1
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Research1peptides 55% cheaper
- MGF
Peptide Science Now
$27.00/mg
5 mg · $135.00
checked 30 Oct 2026
Research1peptides
$12.00/mg
2 mg · $24.00
checked 7 Nov 2026
Research1peptides 56% cheaper
- MOTS-C
Peptide Science Now
$11.00/mg
10 mg · $110.00
checked 30 Oct 2026
Research1peptides
$1.38/mg
40 mg · $55.00
checked 7 Nov 2026
Research1peptides 88% cheaper
- NAD+
Peptide Science Now
$0.400/mg
750 mg · $300.00
checked 30 Oct 2026
Research1peptides
$0.045/mg
1000 mg · $45.00
checked 7 Nov 2026
Research1peptides 89% cheaper
- Oxytocin
Peptide Science Now
$6.50/mg
10 mg · $65.00
checked 30 Oct 2026
Research1peptides
$4.40/mg
5 mg · $22.00
checked 7 Nov 2026
Research1peptides 32% cheaper
- P21
Peptide Science Now
$24.00/mg
5 mg · $120.00
checked 30 Oct 2026
Research1peptides
$5.50/mg
20 mg · $110.00
checked 7 Nov 2026
Research1peptides 77% cheaper
- PNC-27
Peptide Science Now
$30.00/mg
5 mg · $150.00
checked 30 Oct 2026
Research1peptides
$4.00/mg
20 mg · $80.00
checked 7 Nov 2026
Research1peptides 87% cheaper
- Prostamax
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 38% cheaper
- Retatrutide
Peptide Science Now
$15.83/mg
12 mg · $190.00
checked 30 Oct 2026
Research1peptides
$2.29/mg
100 mg · $229.00
checked 7 Nov 2026
Research1peptides 86% cheaper
- Selank
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Research1peptides 55% cheaper
- Semaglutide
Peptide Science Now
$22.50/mg
10 mg · $225.00
checked 30 Oct 2026
Research1peptides
$2.25/mg
20 mg · $45.00
checked 7 Nov 2026
Research1peptides 90% cheaper
- Semax
Peptide Science Now
$2.50/mg
30 mg · $75.00
checked 30 Oct 2026
Research1peptides
$2.50/mg
10 mg · $25.00
checked 7 Nov 2026
Same price
- Sermorelin
Peptide Science Now
$8.33/mg
15 mg · $125.00
checked 30 Oct 2026
Research1peptides
$4.50/mg
10 mg · $45.00
checked 7 Nov 2026
Research1peptides 46% cheaper
- TB-500
Peptide Science Now
$13.50/mg
10 mg · $135.00
checked 30 Oct 2026
Research1peptides
$3.90/mg
10 mg · $39.00
checked 7 Nov 2026
Research1peptides 71% cheaper
- Testagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 38% cheaper
- Thymalin
Peptide Science Now
$6.00/mg
20 mg · $120.00
checked 30 Oct 2026
Research1peptides
$1.75/mg
20 mg · $35.00
checked 7 Nov 2026
Research1peptides 71% cheaper
- Thymogen
Peptide Science Now
$4.00/mg
20 mg · $80.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 50% cheaper
- Thymosin Alpha-1
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Research1peptides
$4.29/mg
7 mg · $30.00
checked 7 Nov 2026
Research1peptides 67% cheaper
- Tirzepatide
Peptide Science Now
$16.33/mg
15 mg · $245.00
checked 30 Oct 2026
Research1peptides
$1.59/mg
100 mg · $159.00
checked 7 Nov 2026
Research1peptides 90% cheaper
- Vesugen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Research1peptides
$2.00/mg
20 mg · $40.00
checked 7 Nov 2026
Research1peptides 38% cheaper
- VIP
Peptide Science Now
$12.50/mg
6 mg · $75.00
checked 30 Oct 2026
Research1peptides
$4.00/mg
10 mg · $40.00
checked 7 Nov 2026
Research1peptides 68% cheaper
| Peptide | Peptide Science Now | Research1peptides | Difference per mg |
|---|---|---|---|
| Adipotide | $8.90/mg 10 mg · $89.00 checked 30 Oct 2026 | $10.00/mg 5 mg · $50.00 checked 7 Nov 2026 | Peptide Science Now 11% cheaper |
| AICAR | $1.00/mg 50 mg · $50.00 checked 30 Oct 2026 | $0.500/mg 50 mg · $25.00 checked 7 Nov 2026 | Research1peptides 50% cheaper |
| AOD-9604 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | $5.80/mg 5 mg · $29.00 checked 7 Nov 2026 | Research1peptides 46% cheaper |
| ARA-290 | $4.69/mg 16 mg · $75.00 checked 30 Oct 2026 | $2.70/mg 10 mg · $27.00 checked 7 Nov 2026 | Research1peptides 42% cheaper |
| BPC-157 | $9.33/mg 15 mg · $140.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 79% cheaper |
| Cardiogen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $1.75/mg 20 mg · $35.00 checked 7 Nov 2026 | Research1peptides 46% cheaper |
| Cartalax | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | $1.50/mg 20 mg · $30.00 checked 7 Nov 2026 | Research1peptides 50% cheaper |
| Chonluten | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $1.75/mg 20 mg · $35.00 checked 7 Nov 2026 | Research1peptides 46% cheaper |
| CJC-1295 NO DAC | $9.90/mg 5 mg · $49.50 checked 30 Oct 2026 | $3.50/mg 10 mg · $35.00 checked 7 Nov 2026 | Research1peptides 65% cheaper |
| Cortagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 38% cheaper |
| DSIP | $10.00/mg 5 mg · $50.00 checked 30 Oct 2026 | $2.70/mg 10 mg · $27.00 checked 7 Nov 2026 | Research1peptides 73% cheaper |
| Epithalon | $3.80/mg 50 mg · $190.00 checked 30 Oct 2026 | $1.30/mg 50 mg · $65.00 checked 7 Nov 2026 | Research1peptides 66% cheaper |
| GHK-Cu | $1.40/mg 50 mg · $70.00 checked 30 Oct 2026 | $0.260/mg 100 mg · $26.00 checked 7 Nov 2026 | Research1peptides 81% cheaper |
| GHRP-2 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | $2.00/mg 10 mg · $20.00 checked 7 Nov 2026 | Research1peptides 60% cheaper |
| GHRP-6 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | $2.00/mg 10 mg · $20.00 checked 7 Nov 2026 | Research1peptides 60% cheaper |
| Glutathione | $0.142/mg 600 mg · $85.00 checked 30 Oct 2026 | $0.020/mg 1500 mg · $30.00 checked 7 Nov 2026 | Research1peptides 86% cheaper |
| Hexarelin | $9.00/mg 5 mg · $45.00 checked 30 Oct 2026 | $4.50/mg 10 mg · $45.00 checked 7 Nov 2026 | Research1peptides 50% cheaper |
| hGH Fragment 176-191 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | $5.00/mg 5 mg · $25.00 checked 7 Nov 2026 | Research1peptides 54% cheaper |
| IGF-1 LR3 | $110.00/mg 1 mg · $110.00 checked 30 Oct 2026 | $45.00/mg 1 mg · $45.00 checked 7 Nov 2026 | Research1peptides 59% cheaper |
| Ipamorelin | $8.00/mg 10 mg · $80.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Research1peptides 69% cheaper |
| Kisspeptin | $13.00/mg 5 mg · $65.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Research1peptides 81% cheaper |
| KPV | $11.00/mg 5 mg · $55.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Research1peptides 77% cheaper |
| Livagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $1.75/mg 20 mg · $35.00 checked 7 Nov 2026 | Research1peptides 46% cheaper |
| LL-37 | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | $7.00/mg 5 mg · $35.00 checked 7 Nov 2026 | Research1peptides 63% cheaper |
| Melanotan 1 | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Research1peptides 55% cheaper |
| MGF | $27.00/mg 5 mg · $135.00 checked 30 Oct 2026 | $12.00/mg 2 mg · $24.00 checked 7 Nov 2026 | Research1peptides 56% cheaper |
| MOTS-C | $11.00/mg 10 mg · $110.00 checked 30 Oct 2026 | $1.38/mg 40 mg · $55.00 checked 7 Nov 2026 | Research1peptides 88% cheaper |
| NAD+ | $0.400/mg 750 mg · $300.00 checked 30 Oct 2026 | $0.045/mg 1000 mg · $45.00 checked 7 Nov 2026 | Research1peptides 89% cheaper |
| Oxytocin | $6.50/mg 10 mg · $65.00 checked 30 Oct 2026 | $4.40/mg 5 mg · $22.00 checked 7 Nov 2026 | Research1peptides 32% cheaper |
| P21 | $24.00/mg 5 mg · $120.00 checked 30 Oct 2026 | $5.50/mg 20 mg · $110.00 checked 7 Nov 2026 | Research1peptides 77% cheaper |
| PNC-27 | $30.00/mg 5 mg · $150.00 checked 30 Oct 2026 | $4.00/mg 20 mg · $80.00 checked 7 Nov 2026 | Research1peptides 87% cheaper |
| Prostamax | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 38% cheaper |
| Retatrutide | $15.83/mg 12 mg · $190.00 checked 30 Oct 2026 | $2.29/mg 100 mg · $229.00 checked 7 Nov 2026 | Research1peptides 86% cheaper |
| Selank | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Research1peptides 55% cheaper |
| Semaglutide | $22.50/mg 10 mg · $225.00 checked 30 Oct 2026 | $2.25/mg 20 mg · $45.00 checked 7 Nov 2026 | Research1peptides 90% cheaper |
| Semax | $2.50/mg 30 mg · $75.00 checked 30 Oct 2026 | $2.50/mg 10 mg · $25.00 checked 7 Nov 2026 | Same price |
| Sermorelin | $8.33/mg 15 mg · $125.00 checked 30 Oct 2026 | $4.50/mg 10 mg · $45.00 checked 7 Nov 2026 | Research1peptides 46% cheaper |
| TB-500 | $13.50/mg 10 mg · $135.00 checked 30 Oct 2026 | $3.90/mg 10 mg · $39.00 checked 7 Nov 2026 | Research1peptides 71% cheaper |
| Testagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 38% cheaper |
| Thymalin | $6.00/mg 20 mg · $120.00 checked 30 Oct 2026 | $1.75/mg 20 mg · $35.00 checked 7 Nov 2026 | Research1peptides 71% cheaper |
| Thymogen | $4.00/mg 20 mg · $80.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 50% cheaper |
| Thymosin Alpha-1 | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | $4.29/mg 7 mg · $30.00 checked 7 Nov 2026 | Research1peptides 67% cheaper |
| Tirzepatide | $16.33/mg 15 mg · $245.00 checked 30 Oct 2026 | $1.59/mg 100 mg · $159.00 checked 7 Nov 2026 | Research1peptides 90% cheaper |
| Vesugen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.00/mg 20 mg · $40.00 checked 7 Nov 2026 | Research1peptides 38% cheaper |
| VIP | $12.50/mg 6 mg · $75.00 checked 30 Oct 2026 | $4.00/mg 10 mg · $40.00 checked 7 Nov 2026 | Research1peptides 68% cheaper |
Only at Peptide Science Now: 24 peptides in the same market
Only at Research1peptides: 19 peptides in the same market
Peptide Science Now compared with
- Peptide Science Store63 shared
- Huaian Hanyou Peptide58 shared
- Peptides direct to you58 shared
- Nordsci Peptides57 shared
- Lab Ratz Research53 shared
- Peptides GG53 shared
- Core Peptides52 shared
- Raw Amino52 shared
- Luxe Peptides51 shared
- NHOV51 shared
- Vipris Biotechnology51 shared
- Amino Usa49 shared
- VPeptide49 shared
- Nexus Bio Life47 shared
- Prime Longevity Peptides45 shared
- Priority Peptides45 shared
- TrueLab Peptides43 shared
- Biotech Peptides42 shared
- Cenexa Labs42 shared
- LabFirst Peptides42 shared
- Pure Lab Peptides42 shared
- Grey Axis Research41 shared
- Grey Matters Research41 shared
- Catalyst Peptides40 shared
- Eppixlabs40 shared
- Eros Peptides40 shared
- Alpha Peptides39 shared
- Ares Research39 shared
- Bridge Research37 shared
- SQS Research33 shared
Research1peptides compared with
- Lab Ratz Research56 shared
- Huaian Hanyou Peptide55 shared
- Peptides direct to you54 shared
- Peptides GG54 shared
- VPeptide52 shared
- NHOV50 shared
- Raw Amino50 shared
- Core Peptides49 shared
- Luxe Peptides49 shared
- Prime Longevity Peptides49 shared
- Vipris Biotechnology49 shared
- Pure Lab Peptides48 shared
- TrueLab Peptides48 shared
- Catalyst Peptides47 shared
- Grey Axis Research47 shared
- Priority Peptides47 shared
- Amino Usa46 shared
- Eppixlabs46 shared
- Eros Peptides46 shared
- Grey Matters Research46 shared
- LabFirst Peptides46 shared
- Peptide Science Store45 shared
- Ares Research44 shared
- Cenexa Labs44 shared
- Nexus Bio Life44 shared
- Nordsci Peptides44 shared
- Alpha Peptides43 shared
- Biotech Peptides43 shared
- Bridge Research41 shared
- SQS Research40 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.