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Phenibut

GABA-B Agonist

GABA-B agonist. Anxiolytic research compound.

Anxiolytic research
Best Price
at MDPackUSA
$26.32
$0.26/mg · 100g
Buy at MDPackUSA
/ research index

The research base

Research Maturity
★★★☆☆
3/5 — Volume of studies
Evidence Strength
★★★☆☆
3/5 — Quality of evidence

Multiple studies, primarily Russian.

/ mechanism of action

How it works

GABA-B receptor agonist.

/ research dosing

Common research protocols

Range
250-500 mg per dose, max 3x weekly
Frequency
Sparingly — tolerance develops fast
Route
Oral
Cycle
Use as needed, with multi-day breaks
Research notes

GABA-B agonist. Significant tolerance and dependence potential — limit to 2-3x weekly maximum. Withdrawal symptoms occur after regular daily use.

FOR RESEARCH USE ONLY. Doses listed are compiled from published research literature, FDA-approved drug labels, and well-documented research community practice. Not medical advice.
/ standalone use

As a solo compound

Solo use is standard.

/ side effects

What to know

Tolerance develops with regular use. Use sparingly.

/ timeline

Realistic expectations

Acute effects

/ recommendation

Where to buy Phenibut

🏆Our pick for Phenibut
Valor Peptides
100g · USA · Card / Crypto
  • Third-party tested (Janoshik)
  • COAs provided — Comprehensive
  • Highest verification tier in stock
  • 4.8★ community rating
$87.17$73.63
$0.74/mg
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Also solid
Peptidology
100g · $0.31/mg
$30.72
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Ascension Peptides
100g · $0.78/mg
$77.78
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Double R Labs
100g · $0.46/mg
$46.48
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/ all listings

Full index, price per mg

MDPackUSABEST
4.5
Size
100g
Price
$26.32
$/mg
$0.26
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Purus Peptides
4.7
Size
100g
Price
$29.20
$/mg
$0.29
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EZ Peptides
4.7
Size
100g
Price
$30.65
$/mg
$0.31
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Peptidology
4.8
Size
100g
Price
$30.72
$/mg
$0.31
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Throne
4.7
Size
100g
Price
$31.06
$/mg
$0.31
Out of stock
Renova Peptides
4.6
Size
100g
Price
$33.18
$/mg
$0.33
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Molecular Solutions
4.7
Size
100g
Price
$33.50
$/mg
$0.34
Out of stock
Nano Blue Labs
4.6
Size
100g
Price
$34.79
$/mg
$0.35
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AlgoRX
4.7
Size
100g
Price
$35.00
$/mg
$0.35
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AMC Essentials
4.6
Size
100g
Price
$37.42
$/mg
$0.37
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Felix Chemical Supply
4.5
Size
100g
Price
$41.59
$/mg
$0.42
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FITSKNS
4.6
Size
100g
Price
$44.65
$/mg
$0.45
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Double R Labs
4.7
Size
100g
Price
$46.48
$/mg
$0.46
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Southern Aminos
4.6
Size
100g
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$48.31
$/mg
$0.48
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RetaOneLabs
4.7
Size
100g
Price
$51.31
$/mg
$0.51
Out of stock
Ion Peptide
4.6
Size
100g
Price
$55.96
$/mg
$0.56
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Modified Aminos
4.5
Size
100g
Price
$59.51
$/mg
$0.60
Out of stock
Solyn Peptides
4.5
Size
100g
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$60.97
$/mg
$0.61
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Atomik Labz
4.7
Size
100g
Price
$62.37
$/mg
$0.62
Out of stock
Biocase Innovations
4.6
Size
100g
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$68.64
$/mg
$0.69
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Flawless Compounds
4.7
Size
100g
Price
$71.01
$/mg
$0.71
Out of stock
Valor Peptides
4.8
Size
100g
Price
$73.63
$/mg
$0.74
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Solution Peptides
4.6
Size
100g
Price
$75.59
$/mg
$0.76
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Peppy
4.7
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100g
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$76.31
$/mg
$0.76
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Ascension Peptides
4.8
Size
100g
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$77.78
$/mg
$0.78
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Southern Aminos
4.6
Size
25g
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$36.04
$/mg
$1.44
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Purus Peptides
4.7
Size
25g
Price
$40.35
$/mg
$1.61
Out of stock
AlgoRX
4.7
Size
25g
Price
$41.44
$/mg
$1.66
Out of stock
Atomik Labz
4.7
Size
25g
Price
$42.21
$/mg
$1.69
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Biocase Innovations
4.6
Size
25g
Price
$43.19
$/mg
$1.73
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AMC Essentials
4.6
Size
25g
Price
$43.20
$/mg
$1.73
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Flawless Compounds
4.7
Size
25g
Price
$48.61
$/mg
$1.94
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Peppy
4.7
Size
25g
Price
$48.69
$/mg
$1.95
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FITSKNS
4.6
Size
25g
Price
$55.70
$/mg
$2.23
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RetaOneLabs
4.7
Size
25g
Price
$64.10
$/mg
$2.56
Out of stock
Molecular Solutions
4.7
Size
25g
Price
$77.29
$/mg
$3.09
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Throne
4.7
Size
25g
Price
$77.42
$/mg
$3.10
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Ion Peptide
4.6
Size
25g
Price
$81.60
$/mg
$3.26
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Modified Aminos
4.5
Size
25g
Price
$82.08
$/mg
$3.28
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Valor Peptides
4.8
Size
25g
Price
$85.34
$/mg
$3.41
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Solyn Peptides
4.5
Size
25g
Price
$89.47
$/mg
$3.58
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Nano Blue Labs
4.6
Size
25g
Price
$90.92
$/mg
$3.64
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Double R Labs
4.7
Size
25g
Price
$90.96
$/mg
$3.64
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Peptidology
4.8
Size
25g
Price
$91.17
$/mg
$3.65
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Solution Peptides
4.6
Size
25g
Price
$92.97
$/mg
$3.72
Out of stock
Ascension Peptides
4.8
Size
25g
Price
$93.79
$/mg
$3.75
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EZ Peptides
4.7
Size
25g
Price
$98.44
$/mg
$3.94
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Felix Chemical Supply
4.5
Size
25g
Price
$101.40
$/mg
$4.06
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Renova Peptides
4.6
Size
25g
Price
$105.00
$/mg
$4.20
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MDPackUSA
4.5
Size
25g
Price
$110.36
$/mg
$4.41
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FOR RESEARCH USE ONLY. Phenibut is intended for laboratory research and not for human consumption.