There is no strong clinical evidence that hCG (human chorionic gonadotropin) directly increases libido in females. While hCG is sometimes promoted in wellness and hormone optimization circles as a way to boost sexual desire, it is not FDA-approved for this purpose, and the research on its ability to raise the specific hormones tied to female libido is surprisingly thin.
How hCG Works in the Female Body
hCG is a hormone produced naturally during pregnancy. It shares a receptor with luteinizing hormone (LH), one of the key hormones that drives the production of testosterone and progesterone in the ovaries. Specifically, LH stimulates the thecal cells of the ovaries to produce these hormones. Because hCG binds to the same receptor, it can mimic some of LH’s effects, which is why it’s used medically to trigger ovulation in fertility treatments.
The logic behind using hCG for libido goes like this: if hCG stimulates the same receptor as LH, it should increase testosterone production in women, and testosterone plays a role in sexual desire. In theory, that makes sense. In practice, the data tells a different story.
What the Research Actually Shows
A study published in Fertility and Sterility looked at androgen levels in women undergoing ovarian stimulation and found that hCG administration did not increase testosterone or androstenedione levels beyond what had already been achieved with other gonadotropin treatment. Testosterone levels remained at about 0.64 ng/mL after hCG was given, with no further elevation. The earlier gonadotropin treatment had raised testosterone levels roughly 2.6-fold, but adding hCG on top of that produced no additional androgenic boost.
This is a critical finding. If hCG doesn’t meaningfully raise testosterone in women who are already being hormonally stimulated, its ability to drive testosterone-related libido improvements on its own is questionable. It’s worth noting that this study involved women in a specific clinical context (fertility treatment), so the results may not translate perfectly to every scenario. But it remains one of the few rigorous looks at what hCG actually does to female androgen levels.
The Link Between Androgens and Female Desire
Testosterone does matter for female sexual desire, but the relationship is more nuanced than many people realize. Research published in JAMA found that women aged 18 to 44 with very low levels of DHEA-S (a precursor to testosterone) were nearly four times more likely to report low sexual desire compared to women with normal levels. So there is a real hormonal component to libido in women.
However, low desire in women is rarely caused by a single hormone being out of range. Psychological factors, relationship dynamics, stress, sleep, medications (especially antidepressants and hormonal birth control), and overall health all play significant roles. Even when hormones are part of the picture, raising testosterone through hCG specifically, rather than through other approaches, has not been validated in clinical trials for this purpose.
FDA Status and Off-Label Use
The FDA approves hCG in women for exactly one indication: inducing ovulation in infertile women with certain types of anovulation who have already been treated with other gonadotropins. The prescribing label for Pregnyl (a brand-name hCG product) makes no mention of sexual dysfunction or libido. It also explicitly states that hCG has no known effect on fat mobilization, appetite, or body fat distribution, countering another common claim made about the hormone.
Some practitioners prescribe hCG off-label as part of broader hormone therapy protocols for women, often alongside testosterone or other treatments. In those cases, it can be difficult to separate the effects of hCG from the effects of everything else being prescribed. If you’ve heard anecdotal reports of women feeling increased desire on hCG, the effect may be attributable to other components of their protocol, placebo response, or the indirect hormonal shifts that happen when ovarian function is stimulated.
Side Effects to Be Aware Of
hCG is not a benign supplement. It’s an injectable hormone with real risks. The most serious concern for women is ovarian hyperstimulation syndrome (OHSS), which causes pelvic pain, bloating, nausea, vomiting, and rapid weight gain. In severe cases, OHSS can lead to blood clots and require hospitalization.
Other reported side effects include:
- Androgenic effects: unexpected facial or body hair growth, acne, and voice deepening
- Mood changes: irritability, agitation, and restlessness
- Physical symptoms: headache, fatigue, and swelling in the ankles or hands
- Injection site reactions: pain, redness, or irritation
The androgenic side effects are particularly relevant here. If hCG does stimulate some degree of androgen production in certain women, those androgens don’t selectively boost libido. They can also cause unwanted masculinizing effects, especially with repeated use.
Why the Claims Persist
Much of the enthusiasm around hCG for female libido comes from hormone optimization clinics and online wellness communities rather than from peer-reviewed research. hCG is widely used in male hormone therapy, where it does have a clearer mechanism for supporting testosterone production through Leydig cells in the testes. Some of the claims about female libido appear to be extrapolated from the male data, despite the fact that the hormonal landscape in women is fundamentally different.
The placebo effect also plays a notable role in sexual desire. Starting any new treatment with the expectation of improved libido can, by itself, produce short-term improvements in desire and arousal. Without controlled trials comparing hCG to placebo specifically for female sexual function, it’s impossible to separate a real pharmacological effect from expectation.
For women experiencing persistent low desire that’s causing distress, the most evidence-backed approaches involve a combination of addressing underlying causes (medication side effects, hormonal imbalances confirmed through testing, relationship factors, mental health) and, in some cases, targeted therapies that have actually been studied for this specific problem. hCG, as it stands, is not one of them.