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serm40 listings

Tamoxifen

SERM

SERM with extensive research history.

Estrogen researchHormone research
Best Price
at Southern Aminos
$53.19
$1.33/mg · 40mg
Buy at Southern Aminos
/ research index

The research base

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

Decades of clinical research.

/ mechanism of action

How it works

Estrogen receptor modulator with tissue-specific effects.

/ research dosing

Common research protocols

Range
10-20 mg/day
Frequency
Once daily
Route
Oral
Cycle
4-12 weeks
Research notes

SERM research dosing. Lower than oncology doses (20-40mg). Estrogen receptor modulation research.

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

Standard standalone use.

/ side effects

What to know

Common: mild side effects at research doses.

/ timeline

Realistic expectations

Multiple weeks

/ recommendation

Where to buy Tamoxifen

🏆Our pick for Tamoxifen
Valor Peptides
40mg · USA · Card / Crypto
  • Third-party tested (Janoshik)
  • COAs provided — Comprehensive
  • Highest verification tier in stock
  • 4.8★ community rating
Also solid
Modern Research Peptides
40mg · $1.80/mg
$72.19
Buy →
Ascension Peptides
40mg · $2.81/mg
$112.46
Buy →
Lab Sourced
40mg · $1.49/mg
$59.62
Buy →
/ all listings

Full index, price per mg

Southern AminosBEST
4.6
Size
40mg
Price
$53.19
$/mg
$1.33
Buy at Southern Aminos →
Nano Blue Labs
4.6
Size
40mg
Price
$56.13
$/mg
$1.40
Buy at Nano Blue Labs →
Lab Sourced
4.7
Size
40mg
Price
$59.62
$/mg
$1.49
Buy at Lab Sourced →
Biocase Innovations
4.6
Size
40mg
Price
$71.26
$/mg
$1.78
Buy at Biocase Innovations →
Valor Peptides
4.8
Size
40mg
Price
$72.01
$/mg
$1.80
Buy at Valor Peptides →
Modern Research Peptides
4.8
Size
40mg
Price
$72.19
$/mg
$1.80
Buy at Modern Research Peptides →
Atomik Labz
4.7
Size
40mg
Price
$72.24
$/mg
$1.81
Buy at Atomik Labz →
Modified Aminos
4.5
Size
40mg
Price
$72.46
$/mg
$1.81
Buy at Modified Aminos →
Omegamino
4.5
Size
40mg
Price
$75.77
$/mg
$1.89
Buy at Omegamino →
EZ Peptides
4.7
Size
40mg
Price
$90.12
$/mg
$2.25
Buy at EZ Peptides →
Felix Chemical Supply
4.5
Size
40mg
Price
$90.87
$/mg
$2.27
Buy at Felix Chemical Supply →
Solyn Peptides
4.5
Size
40mg
Price
$90.99
$/mg
$2.27
Buy at Solyn Peptides →
One Day Compounds
4.6
Size
40mg
Price
$92.14
$/mg
$2.30
Buy at One Day Compounds →
AlgoRX
4.7
Size
40mg
Price
$94.36
$/mg
$2.36
Buy at AlgoRX →
Welli Labs
4.6
Size
40mg
Price
$96.45
$/mg
$2.41
Buy at Welli Labs →
Throne
4.7
Size
40mg
Price
$97.11
$/mg
$2.43
Buy at Throne →
Ion Peptide
4.6
Size
40mg
Price
$100.65
$/mg
$2.52
Buy at Ion Peptide →
RefillPen
4.5
Size
40mg
Price
$102.23
$/mg
$2.56
Buy at RefillPen →
Welli Labs
4.6
Size
20mg
Price
$51.41
$/mg
$2.57
Buy at Welli Labs →
Modern Research Peptides
4.8
Size
20mg
Price
$53.62
$/mg
$2.68
Buy at Modern Research Peptides →
RetaOneLabs
4.7
Size
40mg
Price
$108.53
$/mg
$2.71
Out of stock
RetaOneLabs
4.7
Size
20mg
Price
$54.43
$/mg
$2.72
Buy at RetaOneLabs →
Ascension Peptides
4.8
Size
40mg
Price
$112.46
$/mg
$2.81
Buy at Ascension Peptides →
Solyn Peptides
4.5
Size
20mg
Price
$59.74
$/mg
$2.99
Buy at Solyn Peptides →
Nano Blue Labs
4.6
Size
20mg
Price
$69.59
$/mg
$3.48
Buy at Nano Blue Labs →
Throne
4.7
Size
20mg
Price
$70.11
$/mg
$3.51
Buy at Throne →
AlgoRX
4.7
Size
20mg
Price
$71.14
$/mg
$3.56
Buy at AlgoRX →
RefillPen
4.5
Size
20mg
Price
$73.96
$/mg
$3.70
Out of stock
Ascension Peptides
4.8
Size
20mg
Price
$74.83
$/mg
$3.74
Out of stock
EZ Peptides
4.7
Size
20mg
Price
$75.23
$/mg
$3.76
Buy at EZ Peptides →
Modified Aminos
4.5
Size
20mg
Price
$76.34
$/mg
$3.82
Buy at Modified Aminos →
Lab Sourced
4.7
Size
20mg
Price
$78.10
$/mg
$3.90
Out of stock
Valor Peptides
4.8
Size
20mg
Price
$86.92
$/mg
$4.35
Buy at Valor Peptides →
Felix Chemical Supply
4.5
Size
20mg
Price
$88.34
$/mg
$4.42
Buy at Felix Chemical Supply →
Biocase Innovations
4.6
Size
20mg
Price
$93.87
$/mg
$4.69
Buy at Biocase Innovations →
Ion Peptide
4.6
Size
20mg
Price
$95.83
$/mg
$4.79
Buy at Ion Peptide →
Atomik Labz
4.7
Size
20mg
Price
$97.77
$/mg
$4.89
Buy at Atomik Labz →
Omegamino
4.5
Size
20mg
Price
$103.07
$/mg
$5.15
Buy at Omegamino →
Southern Aminos
4.6
Size
20mg
Price
$104.78
$/mg
$5.24
Buy at Southern Aminos →
One Day Compounds
4.6
Size
20mg
Price
$118.25
$/mg
$5.91
Buy at One Day Compounds →
FOR RESEARCH USE ONLY. Tamoxifen is intended for laboratory research and not for human consumption.