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Sexual and reproductive health

HCG

Also called Pregnyl, Ovidrel, Choriogonadotropin

InjectableEvidence A2x per week
Half-life
30hours
Typical vial
0.25 / 0.5mg
Research amounts
250–500mcg

per administration

Common schedule
2x per week
Tested in people

A human trial worked out how much to take and how often, so a dosing schedule is shown.

Licensed as a medicine in the US and EU.

Work out your draw

These numbers are a starting point — change any of them.

3 mL cartridge · 300 units loaded300units dialled
Concentration
0.08mg/mL
Volume per draw
3mL
Units to dial
300
Doses per cartridge
1

This is 300 units, past the 60-unit dial. Splitting it across administrations, or using less water to raise the concentration, brings it back into range.

Dial range varies by pen; 1–60 units is the common configuration.

Vial label

Copy this into your label printer.

Published research contexts for HCG describe 250500 mcg per administration. Descriptive only, not a recommendation.

Biphasic, roughly a day to a day and a half; longer than the short peptides here.

Human chorionic gonadotropin is a glycoprotein hormone, not a short peptide, licensed as a medicine and given subcutaneously or intramuscularly. Amounts are usually stated in international units (the recombinant 250 mcg form is about 6,500 IU); no subcutaneous dose-ranging escalation applies, so no schedule table is shown.

Modelled level — 2x per week

1× is the peak after a single dose.

Steady-state peak
1.19× single dose

Read off the modelled curve, not an even-interval formula

Time to steady state
6.3days

About five half-lives

Administrations
2/ week

Where these numbers come from

  • Choriogonadotropin alfa (Ovidrel) and urinary hCG product literatureA licensed glycoprotein hormone; the recombinant form is a 250 mcg subcutaneous dose, urinary forms are dosed in international units.

Next steps

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