37 sources vetted · 71 compounds · cited protocols
Know your dose.
Know your source.
The research peptide reference built around two things nobody else does well: PubMed-cited dosing protocols for every compound, and a transparent source-verification standard.
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Browse all 71 →📚 Cited dosing·🔬 9-point source scoring·💸 $8480 saved this week
/ research dosing
Every compound. Cited protocol.
Dose range, frequency, route, cycle length, and the PubMed references behind each one. This is the part most sites skip — it's the part we lead with.
B
BPC-157
★★★★★
Dose250-500 mcg/day (most common: 500 mcg/day split AM/PM)
FrequencyDaily, often split 250mcg AM + 250mcg PM
Cycle4-8 weeks on, then off for similar duration
Full protocol →
R
Retatrutide (GLP-3)
★★★★★
Dose2 → 4 → 6 → 8 → 12 mg/week (titration ladder)
FrequencyOnce weekly subcutaneous
CycleStart at 2mg/week × 4 weeks → escalate by 2-4mg every 4 weeks → maintenance at 8-12mg/week
Full protocol →
T
Tirzepatide
★★★★★
Dose2.5 → 5 → 7.5 → 10 → 12.5 → 15 mg/week (FDA titration)
FrequencyOnce weekly subcutaneous
CycleStart 2.5mg/week × 4 weeks → escalate by 2.5mg every 4 weeks → maintenance at 10-15mg/week
Full protocol →
I
Ipamorelin
★★★★★
Dose200-300 mcg/dose, 1-3x daily
Frequency1-3x daily; before bed is most common
Cycle8-12 weeks on, 4-8 weeks off
Full protocol →
G
GHK-Cu
★★★★★
Dose1-2 mg/day (subQ) or 1-3% topical concentration
FrequencyDaily for skin/systemic; 3-5x/week for cycles
Cycle30-day cycles: 1mg/day days 1-15, escalate to 2mg/day days 16-30. Then 30 days off.
Full protocol →
M
MK-677
★★★★★
Dose10-25 mg/day (most common: 12.5-25mg/day)
FrequencyOnce daily, usually before bed
Cycle2-3 months on, 1 month off
Full protocol →
/ by goal
What are you researching?
🩹
Healing & Recovery
Injury, tendon, gut
BPC-157TB-500GHK-Cu
⚖️
Weight Loss
GLP-1 / GIP class
Retatrutide (GLP-3)TirzepatideSemaglutide
💪
Growth & GH
GH secretagogues
IpamorelinCJC-1295MK-677
🧬
Longevity
Anti-aging research
EpithalonMOTS-c5-Amino-1MQ
✨
Skin & Hair
Cosmetic, tanning
GHK-CuMelanotan IIMelanotan I
🧠
Cognitive
Nootropic peptides
SemaxSelankPT-141
/ source verification
We don't rank by price alone.
A cheap vial of the wrong compound is worthless. Every source is scored against a 9-point standard built on COA coverage and third-party testing — four core tests, five bonus signals. Price is the last tiebreaker, never the first filter.
Read the methodology →01
In-stock + COA
No certificate of analysis, no recommendation. Full stop.
02
4 core tests
Identity, purity, net content, sterility. Non-negotiable.
03
5 bonus signals
Endotoxins, heavy metals, solvents, traceability, 3rd-party lab.
04
No pay-to-rank
Partners and non-partners scored identically. Always.
/ featured stacks
Protocols that work together.
tendon repair
The Tendon Repair Protocol
Three peptides, three mechanisms, one goal
BPC-157TB-500GHK-Cu
From
$77.52
★★★★★
gh optimization
GH Optimization Stack
Pulsatile, natural GH stimulation
CJC-1295Ipamorelin
From
$59.63
★★★★
longevity
Longevity Foundation Stack
Cellular energy + DNA repair
NAD+MOTS-c
From
$137.85
★★★
/ deep dives
The research, unpacked.
BPC-157·12 min
BPC-157: The Complete Research Guide
Everything we know about BPC-157 from 200+ peer-reviewed studies. Mechanism, dosing, stacking, and what the research actually shows vs the TikTok hype.
Retatrutide (GLP-3)·10 min
Retatrutide (GLP-3): The Triple Receptor Game-Changer
The first triple receptor agonist activating GLP-1, GIP, and glucagon receptors simultaneously. Phase 2 trials show effects significantly beyond semaglutide and tirzepatide.
GHK-Cu·8 min
GHK-Cu: 50 Years of Skin and Collagen Research
First isolated in 1973, GHK-Cu has the longest research history of any cosmetic peptide. What does the data actually show after five decades?
/ live price index
Every compound, ranked.
71 compounds · 2181 live listings
Sort:
📦 Showing 71 compounds
Available sizes
5mg cheapest
Omegamino
$33.34
$24.98
$5.00/mg
🏆
Best Value Overall
AMP Peptides · 10mg
$3.17/mg
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5mg cheapest
RefillPen
$34.32
$6.86/mg
🏆
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$4.14/mg
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50mg cheapest
Lab Sourced
$18.22
$0.36/mg
🏆
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$0.22/mg
★★★★★4/5 research
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Throne
$69.51
$13.90/mg
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★★★★★5/5 research−25%
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★★★★★5/5 research
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$85.93
$17.19/mg
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$7.90/mg
★★★★★3/5 research
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$80.42
$16.08/mg
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$9.88/mg
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$33.11
$6.62/mg
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$4.09/mg
★★★★★4/5 research
Available sizes
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$26.52
$5.30/mg
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$3.02/mg
★★★★★4/5 research−19%
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5mg cheapest
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$94.74
$76.73
$15.35/mg
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Peptidology · 10mg
$9.52/mg
★★★★★4/5 research−20%
Available sizes
5mg cheapest
Double R Labs
$31.33
$6.27/mg
🏆
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$3.03/mg
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5mg cheapest
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$30.76
$6.15/mg
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$6.15/mg
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25mg cheapest
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$2.68/mg
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$0.91/mg
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1mg cheapest
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$51.55
$51.55/mg
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$51.55/mg
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5mg cheapest
Southern Aminos
$24.16
$4.83/mg
🏆
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$2.81/mg
Available sizes
5mg cheapest
AMP Peptides
$21.83
$4.37/mg
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Omegamino · 10mg
$2.70/mg
★★★★★3/5 research−21%
Available sizes
5mg cheapest
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$32.77
$6.55/mg
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$3.67/mg
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5mg cheapest
Purus Peptides
$42.87
$8.57/mg
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$5.90/mg
★★★★★3/5 research−26%
Available sizes
5mg cheapest
Peppy
$92.26
$68.39
$13.68/mg
🏆
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MDPackUSA · 10mg
$6.02/mg
Available sizes
5mg cheapest
Felix Chemical Supply
$63.71
$52.99
$10.60/mg
🏆
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Felix Chemical Supply · 5mg
$10.60/mg
★★★★★5/5 research
Available sizes
18mg cheapest
Ascension Peptides
$84.86
$4.71/mg
🏆
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Ascension Peptides · 18mg
$4.71/mg
Available sizes
10mg cheapest
Molecular Solutions
$35.23
$3.52/mg
🏆
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Molecular Solutions · 10mg
$3.52/mg
★★★★★3/5 research−14%
Available sizes
10mg cheapest
Ion Peptide
$21.26
$18.36
$1.84/mg
🏆
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Ion Peptide · 10mg
$1.84/mg
★★★★★4/5 research
Available sizes
10mg cheapest
Ascension Peptides
$25.17
$2.52/mg
🏆
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Ascension Peptides · 10mg
$2.52/mg
Available sizes
10mg cheapest
AlgoRX
$31.94
$3.19/mg
🏆
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AMP Peptides · 20mg
$1.98/mg
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5mg cheapest
Ascension Peptides
$51.80
$10.36/mg
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Ascension Peptides · 5mg
$10.36/mg
★★★★★4/5 research
Available sizes
5mg cheapest
Felix Chemical Supply
$70.24
$14.05/mg
🏆
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Good Labs · 10mg
$8.08/mg
Available sizes
10mg cheapest
Biocase Innovations
$47.18
$4.72/mg
🏆
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Biocase Innovations · 10mg
$4.72/mg
Available sizes
10mg cheapest
AMC Essentials
$70.07
$7.01/mg
🏆
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AMC Essentials · 10mg
$7.01/mg
Available sizes
10mg cheapest
Solution Peptides
$91.26
$9.13/mg
🏆
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Solution Peptides · 10mg
$9.13/mg
Available sizes
5mg cheapest
AlgoRX
$60.96
$12.19/mg
🏆
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AlgoRX · 5mg
$12.19/mg
Available sizes
10mg cheapest
Nano Blue Labs
$45.05
$37.42
$3.74/mg
🏆
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RefillPen · 50mg
$0.57/mg
Available sizes
10mg cheapest
Omegamino
$46.49
$4.65/mg
🏆
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Omegamino · 10mg
$4.65/mg
Available sizes
10mg cheapest
Molecular Solutions
$40.94
$4.09/mg
🏆
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Molecular Solutions · 10mg
$4.09/mg
Available sizes
10mg cheapest
FITSKNS
$50.85
$41.45
$4.15/mg
🏆
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FITSKNS · 10mg
$4.15/mg
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30mg cheapest
FITSKNS
$56.47
$1.88/mg
🏆
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$1.88/mg
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30mg cheapest
Solyn Peptides
$75.65
$64.91
$2.16/mg
🏆
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Solyn Peptides · 30mg
$2.16/mg
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10mg cheapest
Double R Labs
$132.22
$103.20
$10.32/mg
🏆
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Renova Peptides · 20mg
$6.65/mg
Available sizes
1mg cheapest
MDPackUSA
$71.66
$71.66/mg
🏆
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MDPackUSA · 1mg
$71.66/mg
★★★★★4/5 research
Available sizes
5ml cheapest
One Day Compounds
$46.49
$9.30/mg
🏆
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One Day Compounds · 5ml
$9.30/mg
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10mg cheapest
Solution Peptides
$30.99
$3.10/mg
🏆
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Solution Peptides · 10mg
$3.10/mg
Available sizes
10mg cheapest
Peppy
$35.30
$3.53/mg
🏆
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Peppy · 10mg
$3.53/mg
Available sizes
10mg cheapest
Solution Peptides
$66.05
$6.60/mg
🏆
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Solution Peptides · 10mg
$6.60/mg
★★★★★5/5 research
Available sizes
5mg cheapest
AlgoRX
$47.73
$9.55/mg
🏆
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AlgoRX · 5mg
$9.55/mg
Available sizes
500mg cheapest
Valor Peptides
$69.79
$0.14/mg
🏆
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Southern Aminos · 1000mg
$0.07/mg
Available sizes
250mg cheapest
AMP Peptides
$50.25
$0.20/mg
🏆
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Double R Labs · 500mg
$0.10/mg
★★★★★4/5 research−23%
Available sizes
250mg cheapest
Solution Peptides
$81.72
$62.58
$0.25/mg
🏆
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Glow Aminos · 500mg
$0.13/mg
★★★★★2/5 research
Available sizes
100mg cheapest
Biocase Innovations
$58.50
$0.58/mg
🏆
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Biocase Innovations · 100mg
$0.58/mg
Available sizes
5mg cheapest
Glacier Aminos
$77.24
$15.45/mg
🏆
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Modified Aminos · 10mg
$10.37/mg
Available sizes
500mg cheapest
AMP Peptides
$27.19
$0.05/mg
🏆
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Omegamino · 1000mg
$0.03/mg
Available sizes
500mg cheapest
Good Labs
$22.04
$0.04/mg
🏆
Best Value Overall
Good Labs · 500mg
$0.04/mg
Available sizes
50mg cheapest
Omegamino
$61.11
$48.33
$0.97/mg
🏆
Best Value Overall
Omegamino · 50mg
$0.97/mg
Available sizes
250mg cheapest
Ascension Peptides
$35.58
$0.14/mg
🏆
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Welli Labs · 500mg
$0.07/mg
★★★★★4/5 research
Available sizes
25mg cheapest
RefillPen
$52.17
$2.09/mg
🏆
Best Value Overall
FITSKNS · 50mg
$0.63/mg
★★★★★5/5 research−25%
Available sizes
50mg cheapest
Double R Labs
$36.41
$27.44
$0.55/mg
🏆
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Double R Labs · 50mg
$0.55/mg
Available sizes
20mg cheapest
Welli Labs
$51.41
$2.57/mg
🏆
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Southern Aminos · 40mg
$1.33/mg
★★★★★5/5 research
Available sizes
60mg cheapest
Welli Labs
$40.62
$0.68/mg
🏆
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Welli Labs · 60mg
$0.68/mg
★★★★★4/5 research
Available sizes
60mg cheapest
Molecular Solutions
$44.38
$0.74/mg
🏆
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Molecular Solutions · 60mg
$0.74/mg
Available sizes
5g cheapest
Ion Peptide
$61.49
$12.30/mg
🏆
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Ion Peptide · 5g
$12.30/mg
★★★★★3/5 research
Available sizes
5g cheapest
Modern Research Peptides
$79.29
$15.86/mg
🏆
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Modern Research Peptides · 5g
$15.86/mg
Available sizes
60ml cheapest
Renova Peptides
$16.21
$0.27/mg
🏆
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Renova Peptides · 60ml
$0.27/mg
★★★★★4/5 research
Available sizes
5g cheapest
LA Peptides
$21.43
$4.29/mg
🏆
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LA Peptides · 5g
$4.29/mg
★★★★★3/5 research
Available sizes
50mg cheapest
AlgoRX
$27.91
$0.56/mg
🏆
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Double R Labs · 100mg
$0.32/mg
Available sizes
25g cheapest
Southern Aminos
$36.04
$1.44/mg
🏆
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MDPackUSA · 100g
$0.26/mg
★★★★★2/5 research
Available sizes
10g cheapest
RefillPen
$35.55
$3.55/mg
🏆
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RefillPen · 10g
$3.55/mg
★★★★★2/5 research−24%
Available sizes
5g cheapest
FITSKNS
$58.44
$44.68
$8.94/mg
🏆
Best Value Overall
FITSKNS · 5g
$8.94/mg
Available sizes
10g cheapest
Ion Peptide
$30.64
$3.06/mg
🏆
Best Value Overall
Ion Peptide · 10g
$3.06/mg
Available sizes
100mg cheapest
LA Peptides
$51.06
$0.51/mg
🏆
Best Value Overall
Lab Sourced · 200mg
$0.24/mg
★★★★★5/5 research−25%
Available sizes
150mg cheapest
One Day Compounds
$73.46
$55.37
$0.37/mg
🏆
Best Value Overall
One Day Compounds · 150mg
$0.37/mg
Available sizes
1g cheapest
LA Peptides
$76.79
$76.79/mg
🏆
Best Value Overall
LA Peptides · 1g
$76.79/mg
Available sizes
5g cheapest
Solution Peptides
$18.75
$3.75/mg
🏆
Best Value Overall
Glacier Aminos · 25g
$1.60/mg
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