Vendor comparison
Peptide Science Now vs Prime Longevity Peptides
Neither is consistently cheaper: each is cheaper per mg on 22 of the 45 peptides they share, and they charge the same on 1.
- Listings on the index
- 69
- Cheaper per mg on
- 22 of 45 shared
- Certificates of analysis on file
- none yet
- Ships from
- United States
- Latest price check
- 30 Oct 2026
- Listings on the index
- 60
- Cheaper per mg on
- 22 of 45 shared
- Certificates of analysis on file
- none yet
- Ships from
- not stated
- Latest price check
- 5 Nov 2026
Retail 45
Purchases of fewer than 10 vials.
- AICAR
Peptide Science Now
$1.00/mg
50 mg · $50.00
checked 30 Oct 2026
Prime Longevity Peptides
$1.20/mg
50 mg · $60.00
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- AOD-9604
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$11.00/mg
10 mg · $110.00
checked 5 Nov 2026
Peptide Science Now 2% cheaper
- ARA-290
Peptide Science Now
$4.69/mg
16 mg · $75.00
checked 30 Oct 2026
Prime Longevity Peptides
$5.67/mg
15 mg · $85.00
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- BPC-157
Peptide Science Now
$9.33/mg
15 mg · $140.00
checked 30 Oct 2026
Prime Longevity Peptides
$6.67/mg
30 mg · $200.00
checked 5 Nov 2026
Prime Longevity Peptides 29% cheaper
- Bronchogen
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- Cardiogen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- Cartalax
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- CJC-1295 NO DAC
Peptide Science Now
$9.90/mg
5 mg · $49.50
checked 30 Oct 2026
Prime Longevity Peptides
$9.00/mg
10 mg · $90.00
checked 5 Nov 2026
Prime Longevity Peptides 9% cheaper
- Cortagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- DSIP
Peptide Science Now
$10.00/mg
5 mg · $50.00
checked 30 Oct 2026
Prime Longevity Peptides
$7.50/mg
10 mg · $75.00
checked 5 Nov 2026
Prime Longevity Peptides 25% cheaper
- Epithalon
Peptide Science Now
$3.80/mg
50 mg · $190.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.20/mg
100 mg · $319.95
checked 5 Nov 2026
Prime Longevity Peptides 16% cheaper
- Follistatin-344
Peptide Science Now
$135.00/mg
1 mg · $135.00
checked 30 Oct 2026
Prime Longevity Peptides
$179.00/mg
1 mg · $179.00
checked 5 Nov 2026
Peptide Science Now 25% cheaper
- FOXO4-DRI
Peptide Science Now
$25.00/mg
10 mg · $250.00
checked 30 Oct 2026
Prime Longevity Peptides
$17.50/mg
10 mg · $175.00
checked 5 Nov 2026
Prime Longevity Peptides 30% cheaper
- GHK-Cu
Peptide Science Now
$1.40/mg
50 mg · $70.00
checked 30 Oct 2026
Prime Longevity Peptides
$1.20/mg
100 mg · $120.00
checked 5 Nov 2026
Prime Longevity Peptides 14% cheaper
- GHRP-2
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Prime Longevity Peptides
$6.00/mg
10 mg · $60.00
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- Glutathione
Peptide Science Now
$0.142/mg
600 mg · $85.00
checked 30 Oct 2026
Prime Longevity Peptides
$0.060/mg
1500 mg · $89.95
checked 5 Nov 2026
Prime Longevity Peptides 58% cheaper
- Gonadorelin
Peptide Science Now
$8.50/mg
10 mg · $85.00
checked 30 Oct 2026
Prime Longevity Peptides
$11.80/mg
5 mg · $59.00
checked 5 Nov 2026
Peptide Science Now 28% cheaper
- Hexarelin
Peptide Science Now
$9.00/mg
5 mg · $45.00
checked 30 Oct 2026
Prime Longevity Peptides
$11.80/mg
5 mg · $59.00
checked 5 Nov 2026
Peptide Science Now 24% cheaper
- hGH Fragment 176-191
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$11.00/mg
5 mg · $55.00
checked 5 Nov 2026
Peptide Science Now 2% cheaper
- Humanin
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Prime Longevity Peptides
$7.90/mg
10 mg · $79.00
checked 5 Nov 2026
Prime Longevity Peptides 39% cheaper
- Ipamorelin
Peptide Science Now
$8.00/mg
10 mg · $80.00
checked 30 Oct 2026
Prime Longevity Peptides
$7.00/mg
10 mg · $70.00
checked 5 Nov 2026
Prime Longevity Peptides 13% cheaper
- Kisspeptin
Peptide Science Now
$13.00/mg
5 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$11.00/mg
10 mg · $110.00
checked 5 Nov 2026
Prime Longevity Peptides 15% cheaper
- KPV
Peptide Science Now
$11.00/mg
5 mg · $55.00
checked 30 Oct 2026
Prime Longevity Peptides
$4.97/mg
30 mg · $149.00
checked 5 Nov 2026
Prime Longevity Peptides 55% cheaper
- Livagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- LL-37
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Prime Longevity Peptides
$12.00/mg
10 mg · $120.00
checked 5 Nov 2026
Prime Longevity Peptides 37% cheaper
- Melanotan 1
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Prime Longevity Peptides
$5.90/mg
10 mg · $59.00
checked 5 Nov 2026
Peptide Science Now 7% cheaper
- MOTS-C
Peptide Science Now
$11.00/mg
10 mg · $110.00
checked 30 Oct 2026
Prime Longevity Peptides
$7.50/mg
40 mg · $300.00
checked 5 Nov 2026
Prime Longevity Peptides 32% cheaper
- NAD+
Peptide Science Now
$0.400/mg
750 mg · $300.00
checked 30 Oct 2026
Prime Longevity Peptides
$0.180/mg
1000 mg · $180.00
checked 5 Nov 2026
Prime Longevity Peptides 55% cheaper
- Oxytocin
Peptide Science Now
$6.50/mg
10 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$6.00/mg
10 mg · $60.00
checked 5 Nov 2026
Prime Longevity Peptides 8% cheaper
- Pancragen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- PEG-MGF
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Prime Longevity Peptides
$17.00/mg
5 mg · $85.00
checked 5 Nov 2026
Prime Longevity Peptides 11% cheaper
- Pinealon
Peptide Science Now
$3.75/mg
20 mg · $75.00
checked 30 Oct 2026
Prime Longevity Peptides
$4.00/mg
10 mg · $40.00
checked 5 Nov 2026
Peptide Science Now 6% cheaper
- PNC-27
Peptide Science Now
$30.00/mg
5 mg · $150.00
checked 30 Oct 2026
Prime Longevity Peptides
$28.00/mg
5 mg · $140.00
checked 5 Nov 2026
Prime Longevity Peptides 7% cheaper
- Prostamax
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- Selank
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Prime Longevity Peptides
$4.00/mg
25 mg · $99.95
checked 5 Nov 2026
Prime Longevity Peptides 27% cheaper
- Semax
Peptide Science Now
$2.50/mg
30 mg · $75.00
checked 30 Oct 2026
Prime Longevity Peptides
$4.00/mg
25 mg · $99.95
checked 5 Nov 2026
Peptide Science Now 37% cheaper
- Sermorelin
Peptide Science Now
$8.33/mg
15 mg · $125.00
checked 30 Oct 2026
Prime Longevity Peptides
$9.00/mg
10 mg · $90.00
checked 5 Nov 2026
Peptide Science Now 7% cheaper
- TB-500
Peptide Science Now
$13.50/mg
10 mg · $135.00
checked 30 Oct 2026
Prime Longevity Peptides
$9.16/mg
25 mg · $229.00
checked 5 Nov 2026
Prime Longevity Peptides 32% cheaper
- Testagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- Thymalin
Peptide Science Now
$6.00/mg
20 mg · $120.00
checked 30 Oct 2026
Prime Longevity Peptides
$6.00/mg
10 mg · $60.00
checked 5 Nov 2026
Same price
- Thymogen
Peptide Science Now
$4.00/mg
20 mg · $80.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Prime Longevity Peptides 10% cheaper
- Thymosin Alpha-1
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Prime Longevity Peptides
$10.99/mg
10 mg · $109.95
checked 5 Nov 2026
Prime Longevity Peptides 15% cheaper
- Vesilute
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.93/mg
15 mg · $59.00
checked 5 Nov 2026
Peptide Science Now 17% cheaper
- Vesugen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Prime Longevity Peptides
$3.60/mg
20 mg · $71.95
checked 5 Nov 2026
Peptide Science Now 10% cheaper
- VIP
Peptide Science Now
$12.50/mg
6 mg · $75.00
checked 30 Oct 2026
Prime Longevity Peptides
$12.00/mg
10 mg · $120.00
checked 5 Nov 2026
Prime Longevity Peptides 4% cheaper
| Peptide | Peptide Science Now | Prime Longevity Peptides | Difference per mg |
|---|---|---|---|
| AICAR | $1.00/mg 50 mg · $50.00 checked 30 Oct 2026 | $1.20/mg 50 mg · $60.00 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| AOD-9604 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | $11.00/mg 10 mg · $110.00 checked 5 Nov 2026 | Peptide Science Now 2% cheaper |
| ARA-290 | $4.69/mg 16 mg · $75.00 checked 30 Oct 2026 | $5.67/mg 15 mg · $85.00 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| BPC-157 | $9.33/mg 15 mg · $140.00 checked 30 Oct 2026 | $6.67/mg 30 mg · $200.00 checked 5 Nov 2026 | Prime Longevity Peptides 29% cheaper |
| Bronchogen | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| Cardiogen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| Cartalax | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| CJC-1295 NO DAC | $9.90/mg 5 mg · $49.50 checked 30 Oct 2026 | $9.00/mg 10 mg · $90.00 checked 5 Nov 2026 | Prime Longevity Peptides 9% cheaper |
| Cortagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| DSIP | $10.00/mg 5 mg · $50.00 checked 30 Oct 2026 | $7.50/mg 10 mg · $75.00 checked 5 Nov 2026 | Prime Longevity Peptides 25% cheaper |
| Epithalon | $3.80/mg 50 mg · $190.00 checked 30 Oct 2026 | $3.20/mg 100 mg · $319.95 checked 5 Nov 2026 | Prime Longevity Peptides 16% cheaper |
| Follistatin-344 | $135.00/mg 1 mg · $135.00 checked 30 Oct 2026 | $179.00/mg 1 mg · $179.00 checked 5 Nov 2026 | Peptide Science Now 25% cheaper |
| FOXO4-DRI | $25.00/mg 10 mg · $250.00 checked 30 Oct 2026 | $17.50/mg 10 mg · $175.00 checked 5 Nov 2026 | Prime Longevity Peptides 30% cheaper |
| GHK-Cu | $1.40/mg 50 mg · $70.00 checked 30 Oct 2026 | $1.20/mg 100 mg · $120.00 checked 5 Nov 2026 | Prime Longevity Peptides 14% cheaper |
| GHRP-2 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | $6.00/mg 10 mg · $60.00 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| Glutathione | $0.142/mg 600 mg · $85.00 checked 30 Oct 2026 | $0.060/mg 1500 mg · $89.95 checked 5 Nov 2026 | Prime Longevity Peptides 58% cheaper |
| Gonadorelin | $8.50/mg 10 mg · $85.00 checked 30 Oct 2026 | $11.80/mg 5 mg · $59.00 checked 5 Nov 2026 | Peptide Science Now 28% cheaper |
| Hexarelin | $9.00/mg 5 mg · $45.00 checked 30 Oct 2026 | $11.80/mg 5 mg · $59.00 checked 5 Nov 2026 | Peptide Science Now 24% cheaper |
| hGH Fragment 176-191 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | $11.00/mg 5 mg · $55.00 checked 5 Nov 2026 | Peptide Science Now 2% cheaper |
| Humanin | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | $7.90/mg 10 mg · $79.00 checked 5 Nov 2026 | Prime Longevity Peptides 39% cheaper |
| Ipamorelin | $8.00/mg 10 mg · $80.00 checked 30 Oct 2026 | $7.00/mg 10 mg · $70.00 checked 5 Nov 2026 | Prime Longevity Peptides 13% cheaper |
| Kisspeptin | $13.00/mg 5 mg · $65.00 checked 30 Oct 2026 | $11.00/mg 10 mg · $110.00 checked 5 Nov 2026 | Prime Longevity Peptides 15% cheaper |
| KPV | $11.00/mg 5 mg · $55.00 checked 30 Oct 2026 | $4.97/mg 30 mg · $149.00 checked 5 Nov 2026 | Prime Longevity Peptides 55% cheaper |
| Livagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| LL-37 | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | $12.00/mg 10 mg · $120.00 checked 5 Nov 2026 | Prime Longevity Peptides 37% cheaper |
| Melanotan 1 | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $5.90/mg 10 mg · $59.00 checked 5 Nov 2026 | Peptide Science Now 7% cheaper |
| MOTS-C | $11.00/mg 10 mg · $110.00 checked 30 Oct 2026 | $7.50/mg 40 mg · $300.00 checked 5 Nov 2026 | Prime Longevity Peptides 32% cheaper |
| NAD+ | $0.400/mg 750 mg · $300.00 checked 30 Oct 2026 | $0.180/mg 1000 mg · $180.00 checked 5 Nov 2026 | Prime Longevity Peptides 55% cheaper |
| Oxytocin | $6.50/mg 10 mg · $65.00 checked 30 Oct 2026 | $6.00/mg 10 mg · $60.00 checked 5 Nov 2026 | Prime Longevity Peptides 8% cheaper |
| Pancragen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| PEG-MGF | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | $17.00/mg 5 mg · $85.00 checked 5 Nov 2026 | Prime Longevity Peptides 11% cheaper |
| Pinealon | $3.75/mg 20 mg · $75.00 checked 30 Oct 2026 | $4.00/mg 10 mg · $40.00 checked 5 Nov 2026 | Peptide Science Now 6% cheaper |
| PNC-27 | $30.00/mg 5 mg · $150.00 checked 30 Oct 2026 | $28.00/mg 5 mg · $140.00 checked 5 Nov 2026 | Prime Longevity Peptides 7% cheaper |
| Prostamax | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| Selank | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $4.00/mg 25 mg · $99.95 checked 5 Nov 2026 | Prime Longevity Peptides 27% cheaper |
| Semax | $2.50/mg 30 mg · $75.00 checked 30 Oct 2026 | $4.00/mg 25 mg · $99.95 checked 5 Nov 2026 | Peptide Science Now 37% cheaper |
| Sermorelin | $8.33/mg 15 mg · $125.00 checked 30 Oct 2026 | $9.00/mg 10 mg · $90.00 checked 5 Nov 2026 | Peptide Science Now 7% cheaper |
| TB-500 | $13.50/mg 10 mg · $135.00 checked 30 Oct 2026 | $9.16/mg 25 mg · $229.00 checked 5 Nov 2026 | Prime Longevity Peptides 32% cheaper |
| Testagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| Thymalin | $6.00/mg 20 mg · $120.00 checked 30 Oct 2026 | $6.00/mg 10 mg · $60.00 checked 5 Nov 2026 | Same price |
| Thymogen | $4.00/mg 20 mg · $80.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Prime Longevity Peptides 10% cheaper |
| Thymosin Alpha-1 | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | $10.99/mg 10 mg · $109.95 checked 5 Nov 2026 | Prime Longevity Peptides 15% cheaper |
| Vesilute | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.93/mg 15 mg · $59.00 checked 5 Nov 2026 | Peptide Science Now 17% cheaper |
| Vesugen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.60/mg 20 mg · $71.95 checked 5 Nov 2026 | Peptide Science Now 10% cheaper |
| VIP | $12.50/mg 6 mg · $75.00 checked 30 Oct 2026 | $12.00/mg 10 mg · $120.00 checked 5 Nov 2026 | Prime Longevity Peptides 4% cheaper |
Only at Peptide Science Now: 24 peptides in the same market
Only at Prime Longevity Peptides: 15 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
- Priority Peptides45 shared
- Research1peptides45 shared
- TrueLab Peptides43 shared
- Biotech Peptides42 shared
- Cenexa Labs42 shared
- LabFirst Peptides42 shared
- OP Labs42 shared
- Pure Lab Peptides42 shared
- Grey Axis Research41 shared
- Grey Matters Research41 shared
- Catalyst Peptides40 shared
- Eppixlabs40 shared
- Eros Peptides40 shared
- Alpha Peptides39 shared
- Bridge Research37 shared
- SQS Research33 shared
Prime Longevity Peptides compared with
- Peptides GG54 shared
- Huaian Hanyou Peptide53 shared
- Lab Ratz Research53 shared
- Luxe Peptides52 shared
- Peptides direct to you52 shared
- Raw Amino49 shared
- Research1peptides49 shared
- VPeptide49 shared
- Amino Usa48 shared
- Core Peptides48 shared
- Peptide Science Store48 shared
- Cenexa Labs47 shared
- Nordsci Peptides47 shared
- TrueLab Peptides47 shared
- Eros Peptides46 shared
- Priority Peptides46 shared
- Vipris Biotechnology46 shared
- NHOV45 shared
- Grey Axis Research44 shared
- Pure Lab Peptides44 shared
- Grey Matters Research43 shared
- OP Labs43 shared
- LabFirst Peptides42 shared
- Eppixlabs41 shared
- Nexus Bio Life41 shared
- Alpha Peptides40 shared
- Biotech Peptides40 shared
- Catalyst Peptides40 shared
- Bridge Research37 shared
- SQS Research37 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.