hCG
Human chorionic gonadotropin
A gonadotropin approved for ovulation induction and hypogonadotropic hypogonadism, supplied as a lyophilised powder and dosed in international units rather than by weight.
At a glance
- Category
- Sexual Health
- Half-life
- ~29 hours
- Typical vial sizes
- 5,000 IU · 10,000 IU
Storage
- Lyophilised (unmixed)
- Store at room temperature 20-25C.
- Reconstituted
- Refrigerate at 2-8C after reconstitution and discard after 60 days, per the FDA label. Do not freeze or shake.
What people log it against
Outcomes users commonly track alongside this compound. Listing them is not a claim that it produces them.
- Fertility treatment tracking
- Hormonal axis tracking
References
Each source below establishes only the specific claim noted with it, last checked 2026-08-15. Storage times reflect common handling guidance and are not established by these references.
- FDA label — OVIDREL (choriogonadotropin alfa), DailyMed
Pharmacokinetics after a single 250 mcg subcutaneous dose in healthy females: "t1/2 (h): 29 +/- 6", tmax 24 h (12-24), absolute bioavailability 0.4 +/- 0.1. Terminal half-life after IV dosing is 26.5 +/- 2.5 h. Establishes the 29-hour half-life used here.
- FDA label — CHORIONIC GONADOTROPIN for injection, DailyMed
Source for the IU potency, reconstitution and storage guidance: 10,000 USP units per vial reconstituted with the supplied bacteriostatic water, "USE COMPLETELY WITHIN 60 DAYS AFTER RECONSTITUTION. REFRIGERATE AFTER RECONSTITUTION." This label states NO pharmacokinetic half-life, so the 29 h above comes from the recombinant label rather than from here.
Run your own numbers
As printed on the vial label
How much water you add to the vial
From your clinician, pharmacy, product instructions, or research protocol. 1000 mcg = 1 mg
Fills in a vial size this compound is commonly sold in. It does not fill in a dose — check the size against your own vial label.
Enter your numbers
Still needed: vial strength, bacteriostatic water, dose. Use the figures on your vial label and the dose from your clinician, pharmacy, product instructions, or research protocol — VialPal handles the math.
Keep this vial. VialPal holds the concentration, counts down the doses left in it, and logs the ones you actually took.
Get VialPalVialPal does the arithmetic — it does not tell you what to take. Dose decisions belong between you and a qualified clinician.