How many units is 100 mcg of Hexarelin?

It depends entirely on how much water you added. In a 5 mg vial reconstituted with 2 mL, the concentration is 2.5 mg/mL, so 100 mcg is 0.04 mL, which is 4 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 2 units, and with 3 mL it is 6 units.

How much bacteriostatic water for a 5 mg Hexarelin vial?

2 mL is the usual choice. It gives 2.5 mg/mL, which puts the commonly reported range of 50 mcg to 300 mcg between roughly 2 and 12 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.

How many doses are in a 5 mg vial?

Divide 5 by your dose. At 100 mcg that is 50 doses, which at once daily is 50 days.

How many units is 100 mcg of hexarelin?

In a 5 mg vial with 2 mL of water, 4 units on a U-100 syringe. With 5 mL of water, 10 units.

Hexarelin dosage calculator

Hexarelin is dosed in micrograms, often 100 mcg at a time. Enter your vial and water to get the exact syringe mark.

IndependentThis site does not sell peptides and is not owned by a vendor. Every other calculator on page one of Google belongs to a shop.

The maths is openThe formula is written out on this page and the code behind it is a single file with an automated test suite.

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ReviewedDose ranges and half-life figures last checked 3 September 2026.

Dose to units, at the standard setup

Dose	Draw	U-100 units	Doses per vial	Vial lasts
50 mcg	0.02 mL	2 units	100	100 days
100 mcg	0.04 mL	4 units	50	50 days
150 mcg	0.06 mL	6 units	33	33 days
200 mcg	0.08 mL	8 units	25	25 days
300 mcg	0.12 mL	12 units	16	16 days

Based on a 5 mg vial reconstituted with 2 mL of bacteriostatic water, which is 2.5 mg/mL, drawn on a standard U-100 insulin syringe, once daily.

About the numbers above

Hexarelin is a synthetic hexapeptide growth hormone secretagogue related to GHRP-6. It produces a large growth hormone pulse per microgram, and reports consistently note that the response fades with continuous use, which is why it tends to be run in short cycles. It is not an approved medicine and is sold for research.

A 5 mg vial reconstituted with 2 mL gives 2,500 mcg/mL, so 100 mcg is 0.04 mL, or 4 units. Commonly reported doses are 100 mcg, one to three times a day. If 4 units feels too small to read, reconstitute with 3 or 5 mL rather than changing the dose.

A 5 mg vial at different water volumes

If the draw feels awkward to read, change the water rather than the dose. The dose stays the same; only the mark moves.

Vial	BAC water	Concentration	Draw	U-100 units	Doses/vial
5 mg	1 mL	5 mg/mL	0.02 mL	2 units	50
5 mg	2 mL	2.5 mg/mL	0.04 mL	4 units	50
5 mg	3 mL	1.67 mg/mL	0.06 mL	6 units	50
10 mg	1 mL	10 mg/mL	0.01 mL	1 units	100
10 mg	2 mL	5 mg/mL	0.02 mL	2 units	100
10 mg	3 mL	3.33 mg/mL	0.03 mL	3 units	100

All rows above assume a 100 mcg dose and a standard U-100 insulin syringe, where 100 units = 1 mL.

How long it stays in you

Not well characterised in humans. This site only draws a decay curve where a half-life is actually documented in humans, so there is none here. Treat any precise figure you see elsewhere for Hexarelin with suspicion.

Common questions

How many units is 100 mcg of Hexarelin?: It depends entirely on how much water you added. In a 5 mg vial reconstituted with 2 mL, the concentration is 2.5 mg/mL, so 100 mcg is 0.04 mL, which is 4 units on a U-100 insulin syringe. In the same vial with 1 mL of water it is 2 units, and with 3 mL it is 6 units.
How much bacteriostatic water for a 5 mg Hexarelin vial?: 2 mL is the usual choice. It gives 2.5 mg/mL, which puts the commonly reported range of 50 mcg to 300 mcg between roughly 2 and 12 units. Aim for a draw between about 10 and 50 units, where the barrel is easiest to read, and add or remove water to get there.
How many doses are in a 5 mg vial?: Divide 5 by your dose. At 100 mcg that is 50 doses, which at once daily is 50 days.
How many units is 100 mcg of hexarelin?: In a 5 mg vial with 2 mL of water, 4 units on a U-100 syringe. With 5 mL of water, 10 units.

Buying Hexarelin? The where to buy page lists the vendors this site uses and what to check before ordering, and Peptide Bureau keeps the ranked vendor scorecard.

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Read this before you use the numbers. This is a unit-conversion tool. It converts a vial strength and a volume of bacteriostatic water into a concentration, a draw volume and a mark on an insulin syringe. It does not tell you what to take, whether to take it, or whether a compound is safe for you. Most of the compounds listed here are sold for laboratory research use and are not approved for human use. Nothing on this site is medical advice. Dosing decisions belong with a licensed clinician who knows your history. Always confirm the strength printed on your own vial rather than trusting a preset.