HCG
FDA ApprovedHuman Chorionic Gonadotropin
- Category
- Sexual Health
- Aliases
- hCG, Pregnyl, Novarel
- Administration
- Subcutaneous injection, Intramuscular injection
Timing
A general projection of what people report noticing over time, based on the known mechanism and reported use patterns. It is not a guarantee and individual experience varies considerably.
- 1
1–2 Weeks
In fertility treatment, ovulation-triggering effects occur within 24-36 hours of a single dose; for ongoing testosterone-support use, users may notice early improvement in testicular fullness within the first couple of weeks.
- 2
3–4 Weeks
Continued use in testosterone-support protocols is generally associated with maintained testicular size and function through this window.
- 3
5–7 Weeks
Lab-confirmed testosterone and sperm parameter changes are typically evaluated around this stage in fertility-focused use.
- 4
8–10 Weeks
Effects on testicular function are generally described as stable and maintained with continued, consistent dosing.
- 5
11–15 Weeks
Long-term users typically continue at a steady, physician-directed maintenance dose through this period.
- 6
16–20 Weeks
Available evidence supports continued stable testicular function with ongoing, consistent use at this duration.
- 7
21–24 Weeks
By this stage, most users are evaluating outcomes through lab work in consultation with a physician rather than day-to-day sensation.
⚠️ Research context only. This is not medical advice and results are not guaranteed.