TRT and having kids: what the fertility data actually shows

What did @kmartfit actually say?

The creator claims they've been on TRT for over three years and still have their fertility, crediting a medication called "Enclamaphine" that their clinic prescribes. They say it helps maintain both fertility and testicular size while on testosterone. They frame this as a solved problem, suggesting the right clinic will simply handle it for you.

The core message isn't wrong in spirit. Fertility preservation during TRT is a real clinical goal, and medications exist to help achieve it. But the specific drug name they gave, "Enclamaphine," does not appear in any FDA database, pharmacological literature, or clinical reference. That's a problem worth unpacking carefully before 42,000 viewers repeat it to their doctors.

Does the science back this up?

Yes, with one major asterisk: the science supports fertility preservation during TRT, but not through any drug called "Enclamaphine." The established options are clomiphene citrate (Clomid), human chorionic gonadotropin (hCG), and sometimes anastrozole as an adjunct. These are what clinicians actually use.

Exogenous testosterone suppresses the hypothalamic-pituitary-gonadal (HPG) axis, which reduces LH and FSH signaling to the testes, dropping sperm production and causing testicular atrophy. This is well-documented. Wenker et al. (2015, Fertility and Sterility) found that intramuscular testosterone use significantly reduced sperm concentration, often to azoospermic levels. The good news is that hCG directly mimics LH, stimulating intratesticular testosterone and maintaining spermatogenesis. Coviello et al. (2005, Journal of Clinical Endocrinology and Metabolism) confirmed that concurrent low-dose hCG preserved intratesticular testosterone during exogenous testosterone administration. Clomiphene works differently, blocking estrogen receptors centrally to raise LH and FSH naturally. Both approaches are legitimate. Neither is called "Enclamaphine."

What did they get wrong (or right)?

They got the concept right and the drug name wrong, which is a meaningful distinction when people are googling what their doctor should prescribe them.

Credit where it's due: the creator is correct that TRT suppresses fertility by default, that this can be mitigated, and that working with a knowledgeable clinic matters. These are accurate, helpful points. The framing that "the right clinic is gonna make sure you maintain your fertility" is broadly true and a reasonable nudge toward quality care.

But "Enclamaphine" is not a recognized pharmaceutical name. It may be a mispronunciation or misremembering of enclomiphene, which is a stereoisomer of clomiphene and is prescribed off-label for male hypogonadism and fertility preservation. Enclomiphene citrate has been studied specifically for this purpose. Wiehle et al. (2014, Andrology) found enclomiphene raised LH, FSH, and testosterone while maintaining sperm counts better than exogenous testosterone alone. If that's what the creator meant, it's a real drug with real supporting data. But stating an incorrect drug name to 42,000 people is exactly the kind of thing that causes confusion in clinical conversations.

What should you actually know?

If fertility matters to you and you're considering TRT, this is a conversation you need to have explicitly with your prescriber before starting, not after. Suppression can be rapid and, in some cases, takes months to reverse after stopping testosterone.

The fertility preservation toolkit includes hCG (typically 500-1000 IU twice weekly used alongside testosterone), clomiphene or enclomiphene off-label, and in some cases a full TRT pause with a restart protocol. Semen analysis before and during treatment is the only way to actually know where you stand, not how you feel or what your clinic assumes. Jarow et al. and the American Urological Association guidelines both recommend baseline semen analysis for any man considering TRT who has not completed their family. Working with a urologist or reproductive endocrinologist alongside a TRT provider is advisable if fertility is a real near-term goal, not a vague future plan.