Peptide biohacking TikTok claims: what the PDF won't tell you

What did @karinasbiohacking actually say?

Not much, technically. The claim is that she found a "cheat sheet" with "every peptide, every bit dosage, every protocol, the duration, everything." She's not sharing it directly in the video. She's offering to tell you how to get it if you ask. That's a lead magnet, not a tutorial. And calling it a "cheat sheet" implies that dosing peptides is a simple, plug-and-play process. It isn't.

To be fair, she doesn't make specific health claims in this clip. She doesn't say BPC-157 heals your gut or that CJC-1295 will transform your body composition. The video is essentially a teaser. But the framing, that there exists a single document containing everything you need to know about peptide dosing and protocols, is worth examining on its own terms.

Does the science back this up?

The idea that a standardized peptide dosing guide exists is not backed by science, because standardized peptide dosing for humans largely doesn't exist. Most peptides circulating in biohacking communities have not completed Phase III clinical trials in humans. The research base is thin, scattered, and often limited to animal models or small pilot studies.

Take BPC-157, one of the most hyped peptides online. A 2021 review by Sikiric et al. in Current Pharmaceutical Design summarized decades of animal data showing regenerative effects, but acknowledged the lack of robust human clinical trials. TB-500, another popular option, is similarly stuck in preclinical territory. CJC-1295 has some human pharmacokinetic data, including a 2006 study by Jetté et al. in the Journal of Clinical Endocrinology and Metabolism, but that research was designed to study growth hormone secretion patterns, not to establish consumer dosing protocols.

The point is: no legitimate clinical authority has produced a universal peptide dosing guide, because the evidence doesn't support one yet. Any document claiming to have all the answers is filling a gap that science hasn't filled.

What did they get wrong (or right)?

What she got right: she's not pretending to be a doctor, and she's not rattling off specific doses in the video itself. There's a reasonable argument that people are going to seek out peptide information regardless, and connecting them to a resource is at least transparent about what it is.

What's problematic: the framing assumes that a one-size-fits-all peptide protocol is a real thing. It isn't. Peptide response varies based on body weight, underlying health conditions, the source and purity of the compound, administration route, and whether someone is combining peptides with other substances. A "cheat sheet" that ignores individual variables isn't a shortcut. It's a liability.

There's also a regulatory reality here. In the United States, most of these peptides are not FDA-approved for human use outside of specific clinical contexts. The FDA has taken enforcement action against several compounding pharmacies for producing peptides like BPC-157 and TB-500, classifying them as not eligible for compounding. Presenting a dosing guide as a neutral information resource sidesteps that entirely.

What should you actually know?

If you're interested in peptide therapy, the evidence for some compounds is more developed than others. GHK-Cu has a reasonable body of dermatological research. Ipamorelin and CJC-1295 have legitimate pharmacological data on growth hormone pulsatility. Semax and selank have Eastern European clinical literature, though it's limited in Western peer review. MK-677 is not technically a peptide but a ghrelin mimetic, and its long-term safety profile in healthy adults is genuinely unclear.

None of that means a downloadable PDF is the right entry point. Peptide therapy, where it's legally and medically appropriate, should involve a licensed provider who can review your bloodwork, account for your individual health status, and source compounds from properly certified pharmacies. A cheat sheet downloaded from a TikTok comment section cannot do any of that.

The biohacking community has produced real interest in compounds that mainstream medicine has been slow to study. That curiosity isn't the problem. The problem is when curiosity gets packaged as certainty and sold as a PDF.