Prostamax 20 mg vial price

Prostamax 20 mg vials are listed by 27 vendors. They typically run $54.00 to $79.97, with a median of $60.00, across the 24 showing an exact in-stock price. Last read Nov 1, 2026. This page also shows how much to draw for the commonly cited doses.

Compare prices How to mix it

What a 20 mg vial costs

Every vendor we track that lists this exact size, cheapest first. Sort order is price only; affiliate status never changes it.

Median $60.00 a vial, or $3.00 per mg, across the 24 vendors with an exact, in-stock price.

Median unchanged from Oct 31, 2026.

Testing checks: outside lab · HPLC purity · mass spec identity · batch COA · lab named

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All sizes10 mg20 mg25 mg

Eros Peptides
Prostamax 20MG
$39.99
20 mg$2.00 / mgin stockOct 31, 2026View
Pure Health Peptides
Prostamax
$52.00Size not stated by the vendor
20 mg$2.60 / mgin stockSep 28, 2026View
Modern Aminos
PROSTAMAX 20MG
$54.00
20 mg$2.70 / mgin stockNov 1, 2026View
Amino USA
Prostamax 20mg
$55.00$60.00
20 mg$2.75 / mgin stockOct 31, 2026View
Liberty Peptides
Prostamax 20mg
$55.00
20 mg$2.75 / mgin stockOct 31, 2026View
Peptides 4 Research
PROSTAMAX 20mg
$55.00
20 mg$2.75 / mgin stockOct 31, 2026View
Pura Peptides
Prostamax 20mg
$55.00$65.00
20 mg$2.75 / mgin stockNov 1, 2026View
Pure Lab Peptides
Prostamax 20mg
$54.99
20 mg$2.75 / mgout of stockOct 31, 2026View
TrueLab Peptides
Prostamax (20mg)
$55.00
20 mg$2.75 / mgin stockOct 24, 2026View
Verified Peptides
Prostamax
$55.00
20 mg$2.75 / mgout of stockOct 31, 2026View
BioEdge Research Labs
Prostamax
$59.00
20 mg$2.95 / mgin stockOct 31, 2026View
American Peptides
PROSTAMAX
$60.00
20 mg$3.00 / mgin stockOct 31, 2026View°code PEPTIDEDECODING saves 15%
Luxe Peptides
Prostamax (Bioregulator) (20mg)
$60.00
20 mg$3.00 / mgin stockOct 17, 2026View
BioLongevity Labs
Prostamax (20mg)
$79.97
20 mg$4.00 / mgin stockOct 31, 2026View°
Limitless Life Nootropics
Prostamax
$62.99starting at
20 mgin stockOct 10, 2026View°
Modified Aminos
Prostamax 20mg (Single Vial)
$59.99
20 mg$3.00 / mgin stockOct 31, 2026View
NuScience Peptides
Prostamax Peptide 20mg
$59.99$79.99
20 mg$3.00 / mgin stockOct 31, 2026View
Swiss Chems
Prostamax, 20mg
$59.95
20 mg$3.00 / mgin stockOct 31, 2026View
Core Peptides
Prostamax
$63.00
20 mg$3.15 / mgin stockOct 31, 2026View
Core Peptides Research
Prostamax (20mg)
$63.00
20 mg$3.15 / mgin stockOct 24, 2026View
Iron Peak Peptides
Prostamax
$65.00
20 mg$3.25 / mgin stockOct 10, 2026View
USA Peptide Sciences
Prostamax Peptide 20mg (Bioregulator)
$65.00
20 mg$3.25 / mgin stockOct 31, 2026View
Xcel Peptides
Prostamax
$69.00$99.00
20 mg$3.45 / mgin stockOct 17, 2026View
Xcel Peptides
Prostamax (Bioregulator)
$69.00Size not stated by the vendor
20 mg$3.45 / mgin stockOct 17, 2026View
Evolve Peptides
Prostamax 20 mg
$69.90
20 mg$3.50 / mgin stockOct 31, 2026View
Planet Peptide
Prostamax 20MG
$75.00
20 mg$3.75 / mgin stockOct 21, 2026View
Oath Research
Prostamax
$80.00
20 mg$4.00 / mgin stockOct 31, 2026View
Certified Peptides
PROSTAMAX 20MG
$105.00
20 mg$5.25 / mgin stockOct 31, 2026View

Vendor	Size	Price	Per mg	Availability	Checked	Link
Eros Peptides Prostamax 20MG	20 mg	$39.99	$2.00	in stock	Oct 31, 2026	View
Pure Health Peptides Prostamax	20 mg	$52.00Size not stated by the vendor	$2.60	in stock	Sep 28, 2026	View
Modern Aminos PROSTAMAX 20MG	20 mg	$54.00	$2.70	in stock	Nov 1, 2026	View
Amino USA Prostamax 20mg	20 mg	$55.00$60.00	$2.75	in stock	Oct 31, 2026	View
Liberty Peptides Prostamax 20mg	20 mg	$55.00	$2.75	in stock	Oct 31, 2026	View
Peptides 4 Research PROSTAMAX 20mg	20 mg	$55.00	$2.75	in stock	Oct 31, 2026	View
Pura Peptides Prostamax 20mg	20 mg	$55.00$65.00	$2.75	in stock	Nov 1, 2026	View
Pure Lab Peptides Prostamax 20mg	20 mg	$54.99	$2.75	out of stock	Oct 31, 2026	View
TrueLab Peptides Prostamax (20mg)	20 mg	$55.00	$2.75	in stock	Oct 24, 2026	View
Verified Peptides Prostamax	20 mg	$55.00	$2.75	out of stock	Oct 31, 2026	View
BioEdge Research Labs Prostamax	20 mg	$59.00	$2.95	in stock	Oct 31, 2026	View
American Peptides PROSTAMAX	20 mg	$60.00	$3.00	in stock	Oct 31, 2026	View°code PEPTIDEDECODING saves 15%
Luxe Peptides Prostamax (Bioregulator) (20mg)	20 mg	$60.00	$3.00	in stock	Oct 17, 2026	View
BioLongevity Labs Prostamax (20mg)	20 mg	$79.97	$4.00	in stock	Oct 31, 2026	View°
Limitless Life Nootropics Prostamax	20 mg	$62.99starting at		in stock	Oct 10, 2026	View°
Modified Aminos Prostamax 20mg (Single Vial)	20 mg	$59.99	$3.00	in stock	Oct 31, 2026	View
NuScience Peptides Prostamax Peptide 20mg	20 mg	$59.99$79.99	$3.00	in stock	Oct 31, 2026	View
Swiss Chems Prostamax, 20mg	20 mg	$59.95	$3.00	in stock	Oct 31, 2026	View
Core Peptides Prostamax	20 mg	$63.00	$3.15	in stock	Oct 31, 2026	View
Core Peptides Research Prostamax (20mg)	20 mg	$63.00	$3.15	in stock	Oct 24, 2026	View
Iron Peak Peptides Prostamax	20 mg	$65.00	$3.25	in stock	Oct 10, 2026	View
USA Peptide Sciences Prostamax Peptide 20mg (Bioregulator)	20 mg	$65.00	$3.25	in stock	Oct 31, 2026	View
Xcel Peptides Prostamax	20 mg	$69.00$99.00	$3.45	in stock	Oct 17, 2026	View
Xcel Peptides Prostamax (Bioregulator)	20 mg	$69.00Size not stated by the vendor	$3.45	in stock	Oct 17, 2026	View
Evolve Peptides Prostamax 20 mg	20 mg	$69.90	$3.50	in stock	Oct 31, 2026	View
Planet Peptide Prostamax 20MG	20 mg	$75.00	$3.75	in stock	Oct 21, 2026	View
Oath Research Prostamax	20 mg	$80.00	$4.00	in stock	Oct 31, 2026	View
Certified Peptides PROSTAMAX 20MG	20 mg	$105.00	$5.25	in stock	Oct 31, 2026	View

We earn from these links. It never changes a price or a position here.

Pure Lab Peptides: Stock not shown, left out of the range
Verified Peptides: Stock not shown, left out of the range
Limitless Life Nootropics: "From" price, left out of the range

Where the price has been

Market median at 20 mg: $2.88 per mg on Aug 26, 2026, $3.00 on Nov 5, 2026, 24 stores comparable today.

Market median per mgLowest per mg

Date	Median per mg	Low per mg	Stores
Nov 5, 2026	$3.00	$2.00	24
Oct 31, 2026	$3.00	$2.00	24
Oct 24, 2026	$3.00	$2.00	25
Oct 22, 2026	$3.00	$1.79	24
Oct 21, 2026	$3.00	$1.79	24
Oct 20, 2026	$3.00	$1.79	22
Oct 19, 2026	$3.00	$1.79	21
Oct 18, 2026	$3.00	$1.79	13

How to mix a 20 mg vial

Find the column for the amount of water you added to the vial. The number is how far to draw on a U-100 insulin syringe, where 100 units is 1 mL. This is arithmetic on the label, not a recommended dose.

How to read an insulin syringe · How much water to add

Dose	1 mL water	2 mL water	3 mL water
500 mcg	2.5 units 40 doses/vial	5.0 units 40 doses/vial	7.5 units 40 doses/vial
3000 mcg	15.0 units 6 doses/vial · 2.00 mg left over	30.0 units 6 doses/vial · 2.00 mg left over	45.0 units 6 doses/vial · 2.00 mg left over

No figureDaily, in 10-20 day courseshalf-life Nothing published

Calculating for

Prostamax

Your vial size (mg)

Printed on the vial.

Your dose to model

Commonly referenced range: Research onlyCommunity practice

iPeptide Decoding does not recommend a dose. Enter the amount your clinician gave you, or pick a value from the reference range to model.

Choose your mix (water to add)

Same dose, different draw. Pick whichever is easiest to measure.

mL waterCustom amount. Enter any volume, e.g. 10 mL.—units draw

YOUR DRAW5 / 100 units

Full calculator with reorder date →Read a syringe →

What you paid per vial ($)

Multi-vendor comparison is a Pro feature.

How often (times per week)

Daily is 7. Twice weekly is 2.

Vials you have on hand

Decoded

Your plan for Prostamax

Dose

500 mcg

Syringe draw

5units

Concentration

10mg/mL

Doses per vial

Nothing left over

Cost per dose

$1.48

Monthly cost

$44.86

Current supply lasts

1.3months

Reorder by

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Prostamax compound page Calculator Dosage chart