Vendor comparison
Peptide Science Now vs Priority Peptides
Priority Peptides is cheaper per mg on 42 of the 45 peptides they share; Peptide Science Now on 3.
Across all 45, Priority Peptides’s price per mg is a median 36% lower than Peptide Science Now’s.
- Listings on the index
- 69
- Cheaper per mg on
- 3 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
- 42 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.
- AOD-9604
Peptide Science Now
$10.83/mg
6 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$6.50/mg
10 mg · $64.99
checked 5 Nov 2026
Priority Peptides 40% cheaper
- ARA-290
Peptide Science Now
$4.69/mg
16 mg · $75.00
checked 30 Oct 2026
Priority Peptides
$3.67/mg
30 mg · $109.99
checked 5 Nov 2026
Priority Peptides 22% cheaper
- B7-33
Peptide Science Now
$11.67/mg
6 mg · $70.00
checked 30 Oct 2026
Priority Peptides
$7.50/mg
10 mg · $74.99
checked 5 Nov 2026
Priority Peptides 36% cheaper
- BPC-157
Peptide Science Now
$9.33/mg
15 mg · $140.00
checked 30 Oct 2026
Priority Peptides
$4.50/mg
20 mg · $89.99
checked 5 Nov 2026
Priority Peptides 52% cheaper
- Bronchogen
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides under 1% cheaper
- Cagrilintide
Peptide Science Now
$14.50/mg
10 mg · $145.00
checked 30 Oct 2026
Priority Peptides
$7.00/mg
5 mg · $34.99
checked 5 Nov 2026
Priority Peptides 52% cheaper
- Cardiogen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- Cartalax
Peptide Science Now
$3.00/mg
20 mg · $60.00
checked 30 Oct 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Priority Peptides 31% cheaper
- Chonluten
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- CJC-1295 NO DAC
Peptide Science Now
$9.90/mg
5 mg · $49.50
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides 50% cheaper
- Cortagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- DSIP
Peptide Science Now
$10.00/mg
5 mg · $50.00
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides 50% cheaper
- Epithalon
Peptide Science Now
$3.80/mg
50 mg · $190.00
checked 30 Oct 2026
Priority Peptides
$2.00/mg
50 mg · $99.99
checked 5 Nov 2026
Priority Peptides 47% cheaper
- GHK-Cu
Peptide Science Now
$1.40/mg
50 mg · $70.00
checked 30 Oct 2026
Priority Peptides
$0.650/mg
100 mg · $64.99
checked 5 Nov 2026
Priority Peptides 54% cheaper
- GHRP-2
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides under 1% cheaper
- GHRP-6
Peptide Science Now
$5.00/mg
10 mg · $50.00
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides under 1% cheaper
- Glutathione
Peptide Science Now
$0.142/mg
600 mg · $85.00
checked 30 Oct 2026
Priority Peptides
$0.046/mg
1200 mg · $54.99
checked 5 Nov 2026
Priority Peptides 68% cheaper
- Hexarelin
Peptide Science Now
$9.00/mg
5 mg · $45.00
checked 30 Oct 2026
Priority Peptides
$8.00/mg
5 mg · $39.99
checked 5 Nov 2026
Priority Peptides 11% cheaper
- Humanin
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Priority Peptides
$7.00/mg
10 mg · $69.99
checked 5 Nov 2026
Priority Peptides 46% cheaper
- Ipamorelin
Peptide Science Now
$8.00/mg
10 mg · $80.00
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides 38% cheaper
- Kisspeptin
Peptide Science Now
$13.00/mg
5 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$5.50/mg
10 mg · $54.99
checked 5 Nov 2026
Priority Peptides 58% cheaper
- KPV
Peptide Science Now
$11.00/mg
5 mg · $55.00
checked 30 Oct 2026
Priority Peptides
$3.33/mg
30 mg · $99.99
checked 5 Nov 2026
Priority Peptides 70% cheaper
- Livagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- LL-37
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Priority Peptides
$15.00/mg
5 mg · $74.99
checked 5 Nov 2026
Priority Peptides 21% cheaper
- Melanotan 1
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Priority Peptides
$4.00/mg
10 mg · $39.99
checked 5 Nov 2026
Priority Peptides 27% cheaper
- MOTS-C
Peptide Science Now
$11.00/mg
10 mg · $110.00
checked 30 Oct 2026
Priority Peptides
$3.75/mg
40 mg · $149.99
checked 5 Nov 2026
Priority Peptides 66% cheaper
- NAD+
Peptide Science Now
$0.400/mg
750 mg · $300.00
checked 30 Oct 2026
Priority Peptides
$0.111/mg
1000 mg · $110.99
checked 5 Nov 2026
Priority Peptides 72% cheaper
- Oxytocin
Peptide Science Now
$6.50/mg
10 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$9.99/mg
2 mg · $19.99
checked 5 Nov 2026
Peptide Science Now 35% cheaper
- Pancragen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- PEG-MGF
Peptide Science Now
$19.00/mg
5 mg · $95.00
checked 30 Oct 2026
Priority Peptides
$22.50/mg
2 mg · $44.99
checked 5 Nov 2026
Peptide Science Now 16% cheaper
- Pinealon
Peptide Science Now
$3.75/mg
20 mg · $75.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
10 mg · $29.99
checked 5 Nov 2026
Priority Peptides 20% cheaper
- Prostamax
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$2.50/mg
40 mg · $99.99
checked 5 Nov 2026
Priority Peptides 23% cheaper
- Retatrutide
Peptide Science Now
$15.83/mg
12 mg · $190.00
checked 30 Oct 2026
Priority Peptides
$5.50/mg
50 mg · $275.00
checked 5 Nov 2026
Priority Peptides 65% cheaper
- Selank
Peptide Science Now
$5.50/mg
10 mg · $55.00
checked 30 Oct 2026
Priority Peptides
$4.00/mg
10 mg · $39.99
checked 5 Nov 2026
Priority Peptides 27% cheaper
- Semaglutide
Peptide Science Now
$22.50/mg
10 mg · $225.00
checked 30 Oct 2026
Priority Peptides
$11.30/mg
20 mg · $225.99
checked 5 Nov 2026
Priority Peptides 50% cheaper
- Sermorelin
Peptide Science Now
$8.33/mg
15 mg · $125.00
checked 30 Oct 2026
Priority Peptides
$10.60/mg
10 mg · $105.99
checked 5 Nov 2026
Peptide Science Now 21% cheaper
- SS-31
Peptide Science Now
$6.00/mg
25 mg · $150.00
checked 30 Oct 2026
Priority Peptides
$2.80/mg
50 mg · $139.99
checked 5 Nov 2026
Priority Peptides 53% cheaper
- TB-500
Peptide Science Now
$13.50/mg
10 mg · $135.00
checked 30 Oct 2026
Priority Peptides
$5.00/mg
10 mg · $49.99
checked 5 Nov 2026
Priority Peptides 63% cheaper
- Testagen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- Thymalin
Peptide Science Now
$6.00/mg
20 mg · $120.00
checked 30 Oct 2026
Priority Peptides
$4.50/mg
10 mg · $44.99
checked 5 Nov 2026
Priority Peptides 25% cheaper
- Thymosin Alpha-1
Peptide Science Now
$13.00/mg
10 mg · $130.00
checked 30 Oct 2026
Priority Peptides
$7.50/mg
10 mg · $74.99
checked 5 Nov 2026
Priority Peptides 42% cheaper
- Tirzepatide
Peptide Science Now
$16.33/mg
15 mg · $245.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
120 mg · $360.00
checked 5 Nov 2026
Priority Peptides 82% cheaper
- Vesilute
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$3.00/mg
20 mg · $59.99
checked 5 Nov 2026
Priority Peptides 8% cheaper
- Vesugen
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Priority Peptides 36% cheaper
- Vilon
Peptide Science Now
$3.25/mg
20 mg · $65.00
checked 30 Oct 2026
Priority Peptides
$2.08/mg
60 mg · $124.99
checked 5 Nov 2026
Priority Peptides 36% cheaper
| Peptide | Peptide Science Now | Priority Peptides | Difference per mg |
|---|---|---|---|
| AOD-9604 | $10.83/mg 6 mg · $65.00 checked 30 Oct 2026 | $6.50/mg 10 mg · $64.99 checked 5 Nov 2026 | Priority Peptides 40% cheaper |
| ARA-290 | $4.69/mg 16 mg · $75.00 checked 30 Oct 2026 | $3.67/mg 30 mg · $109.99 checked 5 Nov 2026 | Priority Peptides 22% cheaper |
| B7-33 | $11.67/mg 6 mg · $70.00 checked 30 Oct 2026 | $7.50/mg 10 mg · $74.99 checked 5 Nov 2026 | Priority Peptides 36% cheaper |
| BPC-157 | $9.33/mg 15 mg · $140.00 checked 30 Oct 2026 | $4.50/mg 20 mg · $89.99 checked 5 Nov 2026 | Priority Peptides 52% cheaper |
| Bronchogen | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides under 1% cheaper |
| Cagrilintide | $14.50/mg 10 mg · $145.00 checked 30 Oct 2026 | $7.00/mg 5 mg · $34.99 checked 5 Nov 2026 | Priority Peptides 52% cheaper |
| Cardiogen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| Cartalax | $3.00/mg 20 mg · $60.00 checked 30 Oct 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Priority Peptides 31% cheaper |
| Chonluten | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| CJC-1295 NO DAC | $9.90/mg 5 mg · $49.50 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides 50% cheaper |
| Cortagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| DSIP | $10.00/mg 5 mg · $50.00 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides 50% cheaper |
| Epithalon | $3.80/mg 50 mg · $190.00 checked 30 Oct 2026 | $2.00/mg 50 mg · $99.99 checked 5 Nov 2026 | Priority Peptides 47% cheaper |
| GHK-Cu | $1.40/mg 50 mg · $70.00 checked 30 Oct 2026 | $0.650/mg 100 mg · $64.99 checked 5 Nov 2026 | Priority Peptides 54% cheaper |
| GHRP-2 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides under 1% cheaper |
| GHRP-6 | $5.00/mg 10 mg · $50.00 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides under 1% cheaper |
| Glutathione | $0.142/mg 600 mg · $85.00 checked 30 Oct 2026 | $0.046/mg 1200 mg · $54.99 checked 5 Nov 2026 | Priority Peptides 68% cheaper |
| Hexarelin | $9.00/mg 5 mg · $45.00 checked 30 Oct 2026 | $8.00/mg 5 mg · $39.99 checked 5 Nov 2026 | Priority Peptides 11% cheaper |
| Humanin | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | $7.00/mg 10 mg · $69.99 checked 5 Nov 2026 | Priority Peptides 46% cheaper |
| Ipamorelin | $8.00/mg 10 mg · $80.00 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides 38% cheaper |
| Kisspeptin | $13.00/mg 5 mg · $65.00 checked 30 Oct 2026 | $5.50/mg 10 mg · $54.99 checked 5 Nov 2026 | Priority Peptides 58% cheaper |
| KPV | $11.00/mg 5 mg · $55.00 checked 30 Oct 2026 | $3.33/mg 30 mg · $99.99 checked 5 Nov 2026 | Priority Peptides 70% cheaper |
| Livagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| LL-37 | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | $15.00/mg 5 mg · $74.99 checked 5 Nov 2026 | Priority Peptides 21% cheaper |
| Melanotan 1 | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $4.00/mg 10 mg · $39.99 checked 5 Nov 2026 | Priority Peptides 27% cheaper |
| MOTS-C | $11.00/mg 10 mg · $110.00 checked 30 Oct 2026 | $3.75/mg 40 mg · $149.99 checked 5 Nov 2026 | Priority Peptides 66% cheaper |
| NAD+ | $0.400/mg 750 mg · $300.00 checked 30 Oct 2026 | $0.111/mg 1000 mg · $110.99 checked 5 Nov 2026 | Priority Peptides 72% cheaper |
| Oxytocin | $6.50/mg 10 mg · $65.00 checked 30 Oct 2026 | $9.99/mg 2 mg · $19.99 checked 5 Nov 2026 | Peptide Science Now 35% cheaper |
| Pancragen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| PEG-MGF | $19.00/mg 5 mg · $95.00 checked 30 Oct 2026 | $22.50/mg 2 mg · $44.99 checked 5 Nov 2026 | Peptide Science Now 16% cheaper |
| Pinealon | $3.75/mg 20 mg · $75.00 checked 30 Oct 2026 | $3.00/mg 10 mg · $29.99 checked 5 Nov 2026 | Priority Peptides 20% cheaper |
| Prostamax | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.50/mg 40 mg · $99.99 checked 5 Nov 2026 | Priority Peptides 23% cheaper |
| Retatrutide | $15.83/mg 12 mg · $190.00 checked 30 Oct 2026 | $5.50/mg 50 mg · $275.00 checked 5 Nov 2026 | Priority Peptides 65% cheaper |
| Selank | $5.50/mg 10 mg · $55.00 checked 30 Oct 2026 | $4.00/mg 10 mg · $39.99 checked 5 Nov 2026 | Priority Peptides 27% cheaper |
| Semaglutide | $22.50/mg 10 mg · $225.00 checked 30 Oct 2026 | $11.30/mg 20 mg · $225.99 checked 5 Nov 2026 | Priority Peptides 50% cheaper |
| Sermorelin | $8.33/mg 15 mg · $125.00 checked 30 Oct 2026 | $10.60/mg 10 mg · $105.99 checked 5 Nov 2026 | Peptide Science Now 21% cheaper |
| SS-31 | $6.00/mg 25 mg · $150.00 checked 30 Oct 2026 | $2.80/mg 50 mg · $139.99 checked 5 Nov 2026 | Priority Peptides 53% cheaper |
| TB-500 | $13.50/mg 10 mg · $135.00 checked 30 Oct 2026 | $5.00/mg 10 mg · $49.99 checked 5 Nov 2026 | Priority Peptides 63% cheaper |
| Testagen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| Thymalin | $6.00/mg 20 mg · $120.00 checked 30 Oct 2026 | $4.50/mg 10 mg · $44.99 checked 5 Nov 2026 | Priority Peptides 25% cheaper |
| Thymosin Alpha-1 | $13.00/mg 10 mg · $130.00 checked 30 Oct 2026 | $7.50/mg 10 mg · $74.99 checked 5 Nov 2026 | Priority Peptides 42% cheaper |
| Tirzepatide | $16.33/mg 15 mg · $245.00 checked 30 Oct 2026 | $3.00/mg 120 mg · $360.00 checked 5 Nov 2026 | Priority Peptides 82% cheaper |
| Vesilute | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $3.00/mg 20 mg · $59.99 checked 5 Nov 2026 | Priority Peptides 8% cheaper |
| Vesugen | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Priority Peptides 36% cheaper |
| Vilon | $3.25/mg 20 mg · $65.00 checked 30 Oct 2026 | $2.08/mg 60 mg · $124.99 checked 5 Nov 2026 | Priority Peptides 36% cheaper |
Only at Peptide Science Now: 24 peptides in the same market
Only at Priority 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
- Prime Longevity 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
Priority Peptides compared with
- Lab Ratz Research54 shared
- Peptides direct to you53 shared
- Huaian Hanyou Peptide52 shared
- Peptides GG49 shared
- Grey Axis Research48 shared
- TrueLab Peptides48 shared
- VPeptide48 shared
- Luxe Peptides47 shared
- Raw Amino47 shared
- Research1peptides47 shared
- Core Peptides46 shared
- NHOV46 shared
- Prime Longevity Peptides46 shared
- Eppixlabs44 shared
- Vipris Biotechnology44 shared
- Peptide Science Store43 shared
- Pure Lab Peptides43 shared
- Eros Peptides42 shared
- Grey Matters Research42 shared
- Nexus Bio Life42 shared
- Nordsci Peptides42 shared
- OP Labs42 shared
- Amino Usa41 shared
- Cenexa Labs41 shared
- LabFirst Peptides41 shared
- Alpha Peptides39 shared
- Biotech Peptides39 shared
- Catalyst Peptides39 shared
- SQS Research38 shared
- Bridge Research36 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.