hCG

Also known as Human chorionic gonadotropin, Pregnyl, Ovitrelle

A pregnancy hormone used as a fertility medicine. In men it can make the testicles produce testosterone.

Quick facts

Status: Approved medicine in the EU and US
Evidence: Approved (fertility indications)
Taken as: Injection
Common sizes: Approved as pens or vials from pharmacies. 5,000 IU vials sold online are unregulated.
Category: Hormone · fertility

How it works

It acts like LH, the hormone that triggers ovulation in women and testosterone production in men.

What it’s used for

Fertility treatment (approved)
Some types of low testosterone in men (approved in some countries)
Keeping testicle function during steroid use (not approved)

What the research shows

Well studied for fertility.
Does not cause weight loss — "hCG diets" don't work.

Side effects & risks

Over-stimulated ovaries in women
Breast tenderness or growth in men
Headache and mood changes
Banned in sport for men

Is it legal?

Approved prescription medicine in the EU, UK and US (e.g. Ovitrelle, Pregnyl, Novarel). Prescription-only medicine. Use only under a doctor's supervision — products sold online as "research" versions are unregulated and not the authorised medicine. Prohibited in sport for males (WADA).

Storage & safe handling

Only use as prescribed and supervised by a doctor.
Store exactly as described in the patient leaflet.
Use a new sterile needle every time and dispose of it in a sharps container.

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Sources: EMA product information for Ovitrelle; FDA prescribing information for hCG products; WADA Prohibited List.
Last updated 12 October 2026. Information — not medical advice. PepTimer does not replace a doctor. Many peptides are not approved medicines in the EU, UK or US. Talk to a qualified healthcare provider before starting, changing or stopping any treatment.