Kisspeptin for secondary infertility: what TikTok gets wrong

What did @lilianaroblero__ actually say?

The creator received a vial of kisspeptin in the mail, reconstituted it herself, and injected 250 micrograms subcutaneously. She plans to take it "every single morning" until she hits her LH peak, timing it around ovulation tracking. She's also stacking it with what sounds like BPC-157 (called "BBC" in the transcript) starting the next day. She framed the whole thing as a personal fertility experiment, noting she was already two days late to start and acknowledged it might not work this cycle.

To her credit, she's tracking ovulation with LH tests, using alcohol swabs, and talking about reconstitution challenges honestly. She's not selling anything. She's sharing a real-time self-experiment for secondary infertility, which she tagged explicitly. The "for research purposes only" hashtag is a legal shield that doesn't actually change what she's doing.

Does the science back this up?

There is legitimate clinical research on kisspeptin for fertility, but it looks nothing like what's happening in this video. The evidence base exists, which is more than can be said for many peptides on TikTok, but the gap between clinical use and DIY injection is enormous.

Kisspeptin is a neuropeptide encoded by the KISS1 gene that stimulates GnRH release, which in turn drives LH and FSH secretion. It sits at the top of the reproductive hormone cascade. Studies by Dhillo et al. (2005, Journal of Clinical Endocrinology and Metabolism) demonstrated that IV kisspeptin-54 administration causes a dose-dependent LH surge in healthy women. Later work by Jayasena et al. (2014, Journal of Clinical Investigation) showed kisspeptin-54 could trigger egg maturation in women undergoing IVF when timed appropriately. These are real findings. The mechanism is real.

What those studies did not involve: reconstituted peptides sourced online, subcutaneous self-injection, no baseline hormone panels, no ultrasound monitoring, and no physician oversight. Dosing in clinical trials was also carefully calculated by body weight and administered in controlled settings. The 250 microgram flat dose here has no clinical precedent in the published literature for this application.

What did they get wrong (or right)?

She got the mechanism directionally right. Kisspeptin does play a role in triggering the LH surge that precedes ovulation. That's not pseudoscience. The KISS1 receptor pathway is well-documented. Researchers are genuinely exploring kisspeptin analogs as fertility treatments, partly because they cause less ovarian hyperstimulation syndrome risk than hCG triggers.

What she got wrong is harder to list briefly. First, the source. Peptides ordered online and reconstituted at home carry real contamination and purity risks. There is no regulatory oversight of what's actually in that vial. Second, the timing protocol. She acknowledges she's starting "two days later" than planned, which matters because kisspeptin's utility in fertility is tied to precise cycle timing, not approximate. Third, the dose. 250 micrograms subcutaneously daily is not a studied protocol for natural cycle support. Clinical kisspeptin studies used IV or subcutaneous administration, but with weight-based dosing and hormone monitoring. Fourth, stacking with BPC-157 adds another uncontrolled variable with zero fertility-specific human trial data. If something goes wrong, there's no way to know what caused it.

She also said reconstitution made her "very nervous" because she'd seen "negative things happen." That instinct is worth listening to. Reconstitution errors are common and can degrade peptide activity or introduce contamination.

What should you actually know?

Kisspeptin is not a fringe compound. It has a real research profile, and scientists are actively studying it as a potential fertility treatment. That makes it different from many peptides circulating on social media. But "real research profile" does not mean "safe to self-administer based on TikTok protocols."

Secondary infertility, which affects roughly 11% of couples who've previously conceived according to CDC estimates, is a serious medical condition. The frustration behind videos like this one is understandable. Fertility treatment is expensive, emotionally exhausting, and often inaccessible. That context matters.

But the risks of unmonitored hormone manipulation are real. Kisspeptin administration can theoretically cause LH hyperstimulation. Without ultrasound monitoring, there is no way to detect ovarian hyperstimulation syndrome developing. Without baseline and follow-up hormone panels, there is no way to confirm the peptide is doing what she thinks it's doing versus having no effect or an adverse one. A reproductive endocrinologist can now discuss kisspeptin with informed patients, because the research exists. That conversation is worth having. A solo injection protocol from a TikTok vial is not the same thing.

Bottom line

This video is more scientifically grounded than most peptide content on TikTok, and the creator is clearly doing her homework. But grounded-in-real-science and safe-to-replicate are two different things. If you're dealing with secondary infertility and have read about kisspeptin research, bring that research to a reproductive endocrinologist. Don't bring a vial you reconstituted on your kitchen counter.