If you’ve heard of HCG being used alongside testosterone therapy, you’re not alone. I get questions about it regularly, and the confusion is understandable.

HCG—short for human chorionic gonadotropin—is most commonly known as a pregnancy hormone. It’s produced in large amounts during early pregnancy and has long been used in women’s fertility treatment. In recent years, though, some clinics have started adding it routinely to testosterone replacement therapy (TRT) for men.

Before assuming it’s something you need, it’s worth slowing down and looking at what HCG actually does, where the evidence stands, and when it may—or may not—make sense.

What Is HCG and Why Is It Prescribed to Men?

HCG mimics luteinizing hormone (LH), the signal from the brain that tells the testes to produce testosterone and sperm. Because TRT suppresses natural LH production, some men experience testicular shrinkage or changes in sperm production over time.

In those situations, HCG may help maintain testicular size and stimulate sperm production. That’s why it’s sometimes discussed for men who are actively trying to preserve fertility or are concerned about testicular atrophy.

However, that doesn’t automatically mean it’s appropriate—or necessary—for every man on testosterone.

Where HCG Falls Short

One of the most important things men need to understand is that HCG does not treat the root cause of low testosterone in many cases.

If low testosterone is due to primary hypogonadism, where the testes themselves are not functioning properly, adding HCG won’t fix that problem. Primary hypogonadism can result from things like genetic conditions, testicular injury, prior chemotherapy or radiation, or infections that permanently affect testicular function.

In those cases, the testes simply don’t have the capacity to respond the way people hope they will—no matter how much stimulation they receive.

This is something I see often in practice at Mason City Wellness, where men have been placed on HCG automatically without a clear explanation of whether it truly fits their physiology or goals.

The Research Gap That Matters

Another major consideration is the lack of long-term data.

HCG has been studied extensively in women, particularly for fertility and pregnancy support. In men, however, we do not have long-term randomized controlled trials showing its safety or effectiveness when used chronically alongside testosterone therapy.

That doesn’t mean HCG is always unsafe—but it does mean we should be cautious about routine, indefinite use without a clear indication.

Prescribing hormones without solid long-term data should never be a default decision.

Potential Side Effects Men Should Be Aware Of

Because HCG is not a natural male hormone, introducing it can create side effects in some men. These may include acne, mood changes, water retention, gynecomastia, and increased testicular sensitivity.

Some men tolerate HCG without issue, while others feel worse—not better. This variability is another reason it should be used selectively rather than automatically.

Why HCG Is Not a One-Size-Fits-All Add-On

One of the biggest misconceptions in men’s health is that every TRT protocol should look the same.

It shouldn’t.

At Mason City Wellness in Mason City, Iowa, testosterone therapy is approached individually. That means understanding why testosterone is low, what the patient’s goals are, and whether adding another hormone actually improves outcomes—or just complicates the picture.

For many men, especially those with primary hypogonadism, HCG adds cost, complexity, and potential side effects without addressing the underlying issue.

The Bottom Line

HCG can be helpful in specific situations, particularly for fertility preservation or select cases of testicular atrophy. But it is not a required component of testosterone therapy, and it is not appropriate for every man.

Given the lack of long-term data and the potential for side effects, HCG should be used thoughtfully—not automatically.

If you’re on testosterone and wondering whether HCG belongs in your treatment plan, that decision should be based on physiology, goals, and careful monitoring—not trends or assumptions.

That’s the approach we take every day at Mason City Wellness—helping men make informed decisions rooted in evidence, not one-size-fits-all protocols.

 

Samantha Smith ARNP, NP-C