What Is HCG and Why Do People Use It?

HCG (human chorionic gonadotropin) is a hormone your body makes during pregnancy. Outside of pregnancy, doctors sometimes prescribe it for two main reasons: helping men and women with fertility problems and supporting certain weight‑loss programs.

HCG for Fertility

When a couple has trouble getting pregnant, doctors may give HCG shots to trigger ovulation in women or to boost testosterone production in men. The injection mimics a natural surge that tells the ovaries or testes to release eggs or sperm. Most patients see a noticeable bump in hormone levels within a few days, which can improve the chances of conception during a timed intercourse or IVF cycle.

Key point: HCG isn’t a magic fix. It works best when combined with other fertility meds and a clear treatment plan from a specialist.

HCG and Weight‑Loss Programs

Some diet plans pair a low‑calorie diet (often 500‑800 calories a day) with daily HCG injections or drops. The idea is that HCG tells the body to keep burning fat while you eat very little. Reviews are mixed—some people report quick weight loss and less hunger, while others see no difference compared to a plain low‑calorie diet.

Safety is a big concern. The FDA does not approve HCG for weight loss, and using it without medical supervision can lead to dehydration, electrolyte imbalance, and gallstones. If you consider this route, talk to a doctor, get labs checked, and make sure you’re drinking enough water.

How to Use HCG Safely

Most prescriptions come as a powder you mix with sterile water, then inject subcutaneously (under the skin) once a day. The typical dose for fertility ranges from 5,000 to 10,000 IU per injection, while weight‑loss protocols often use 125 to 250 IU per day. Always follow the exact dosage your doctor gives you—don’t guess.

Store reconstituted HCG in the fridge and use it within the time frame the label says (usually 30 days). Throw away any leftovers after that.

Potential Side Effects

Common side effects include mild headache, fatigue, and irritation at the injection site. Men might notice breast tenderness; women could get bloating or mild cramping. Serious reactions—like allergic rash, fast heartbeat, or severe abdominal pain—need immediate medical attention.

Because HCG influences other hormones, it can affect thyroid function and cause temporary changes in mood. Getting blood work before and during treatment helps catch any issues early.

Bottom Line

HCG can be a useful tool for fertility and, in some cases, weight‑loss, but it isn’t a shortcut. The hormone works best when paired with professional guidance, proper dosing, and a balanced diet. Ignoring medical advice can lead to avoidable health problems.

If you’re curious about HCG, start by scheduling a chat with a healthcare provider who knows your medical history. Ask about the benefits, risks, and what monitoring will look like. That way you’ll know exactly what to expect and can make an informed decision.