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Peptide Dosages | DosageFacts

Peptide dosage reference for the US and Canada
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Peptide glossary

Short definitions of the words used on this site. Where a word has an everyday meaning and a narrower one here, the one used on the dosage pages is given.

Last checked 10 Oct 2026

Terms A to Z

Bacteriostatic water
Sterile water with a small amount of preservative, used to mix a vial that will be drawn from more than once.
Blend
More than one peptide dried together in one vial. The parts are always drawn in the same proportion.
Concentration
How much peptide is in each millilitre of liquid, in mg/mL. Milligrams in the vial divided by millilitres of water added.
DAC
Drug affinity complex. A chemical addition to CJC-1295 that makes it last longer in the body. CJC-1295 with DAC and without DAC are dosed differently.
Drug Product Database
Health Canada's public list of authorized drug products and whether each is marketed.
Drugs@FDA
The FDA's public list of approved drug products and their labels.
Half-life
The time it takes for the amount of a substance in the blood to fall by half.
Insulin syringe
A small syringe with a fine fixed needle, marked in units. The charts on this site use the U-100 kind.
IU
International unit. A measure of how active a substance is. It is not weight or volume, and it is different for every substance.
Label dose
A dose printed on the label of a medicine approved by a regulator.
Lyophilized
Freeze-dried. Most peptide vials hold a lyophilized powder that is mixed with water before use.
mcg
Microgram. One thousandth of a milligram.
mg
Milligram. One thousandth of a gram. 1 mg is 1,000 mcg.
mg/mL
Milligrams per millilitre. The unit of concentration.
mL
Millilitre. A measure of volume. 1 mL is 100 units on a U-100 syringe.
Off-label
Use of an approved medicine for something, or at a dose, that is not on its label.
Randomized trial
A study where people are assigned by chance to the treatment or to a comparison. The strongest kind of human evidence listed on this site.
Reconstitution
Mixing a dry powder with water to make a liquid.
Reported range
Doses that people report using, which no human trial has tested. Marked as such on every chart that uses one.
Subcutaneous
Under the skin. The route most injected peptides on this site are given by.
Titration
Starting at a low dose and stepping up on a schedule, as the labels for semaglutide and tirzepatide do.
U-100
A syringe scale where 100 units is 1 mL.
Unit (syringe)
One mark of volume on an insulin syringe. On U-100, one unit is 0.01 mL.
Vial
The small glass bottle the peptide comes in. The milligrams printed on it are the total in the vial, not a dose.

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DosageFacts is an information site. It is not medical advice. Talk to a licensed professional before using any medication.