What Is PNC-27? Dosage, Half-Life & How to Track It
Also known as: PNC27 · HDM-2 Binding Peptide
PNC-27 is a 32-amino-acid research peptide studied in preclinical models for selectively targeting cancer cells that carry abnormal p53/HDM-2 complexes. There are no completed human clinical trials, and the FDA has explicitly warned that PNC-27 products are unapproved and have no established safety data. Any dosing figure quoted for it is a community extrapolation, not a clinical standard — this page is educational only, and the honest answer for most readers is that this is not an appropriate self-directed compound.
What PNC-27 is and how it works
PNC-27 is a synthetic 32-amino-acid peptide built from two parts: a segment that binds HDM-2 (a protein many cancer cells overexpress to inactivate the tumor-suppressor p53) and a membrane-penetrating sequence that lets it get inside cells. In preclinical (cell-culture and animal) models, this combination has shown selective cytotoxic effects against cells expressing abnormal p53/HDM-2 complexes — essentially, disabling the cell’s ability to protect itself from destruction.
The concept is scientifically interesting — targeting a cancer-specific vulnerability rather than healthy tissue broadly — but the research is still at the in-vitro and animal stage. There is no completed human clinical trial, and the FDA has issued explicit warnings that PNC-27 products sold online are unapproved, with safety and dosing entirely unestablished in people.
Dosing figures you may see — and why they’re not clinical guidance
PNC-27 is sometimes reconstituted with bacteriostatic water — a 30 mg vial in 3 mL gives 10 mg/mL, where one insulin-syringe unit is about 100 mcg. Community sources describe titration schedules starting around 100 mcg daily and rising toward 500 mcg over roughly 16 weeks.
| Weeks | Daily dose | Units (U-100) ≈ |
|---|---|---|
| Weeks 1–4 | 100–200 mcg | 1–2 units |
| Weeks 5–12 | 300–400 mcg | 3–4 units |
| Weeks 13–16 | 500 mcg | 5 units |
These figures are informal and non-clinical — and, per the sourcing that circulates them, explicitly described as speculative above a few hundred micrograms a day. Nothing here is a recommendation to use PNC-27.
Half-life & what’s actually known
There is no published human pharmacokinetic data for PNC-27 — no half-life, no bioavailability figures, nothing derived from a controlled human study. Anything quoted as a “half-life” for this compound is not sourced from human clinical research.
That absence of data is the headline fact, not a footnote. Compounds with an established evidence base — even other early-stage research peptides — at least have animal PK studies and dose-ranging work behind community protocols. PNC-27’s human-relevant safety profile is, as the FDA has stated directly, not established.
What to know before considering it
This is the thinnest-evidence compound in this library. There is no established side-effect profile, no verified sourcing standard for products sold as PNC-27, and an explicit regulatory warning against it. If you’re researching it out of interest in the p53/HDM-2 mechanism, that’s a legitimate scientific question — the honest next step is reading the primary preclinical literature, not sourcing the peptide.
If you are already using it, the responsible minimum is a plain dose-and-date log and a conversation with a physician who knows your full history — not a fitness or performance outcome to optimize against.
How to track PNC-27 in Stackeddd
If you’re tracking PNC-27 at all, keep the log to the essentials — dose, date, site — nothing more. This is the one compound in this library where “track less, not more” is the honest advice, given the complete absence of human safety data and the FDA’s explicit warning.
Model it yourself · free, no account
Reconstitution Calculator
If you do reconstitute it, model the math first: enter your vial size and BAC water and the Peptides tab returns concentration and exact syringe units — the same calculator built into the Stackeddd app.
Related compounds
Related reading: Peptide reconstitution math: how much BAC water to add
Frequently asked questions
What is PNC-27 used for?
PNC-27 is studied preclinically for selective cytotoxicity against cancer cells that overexpress HDM-2, via a p53-reactivation mechanism. It has no completed human trials and no approved medical use.
Is PNC-27 approved by the FDA?
No. The FDA has explicitly warned that PNC-27 products sold online are unapproved and lack established safety data in humans.
What is the half-life of PNC-27?
None is published. There is no human pharmacokinetic study of PNC-27, so any half-life figure circulating for it is not derived from clinical data.
Is there human safety data for PNC-27?
No completed human clinical trials exist. The supporting evidence is limited to cell-culture and animal research; the FDA’s public position is that safety and dosing in humans are unestablished.
This is educational information, not medical advice. Doses and protocols above reflect published references and community practice — protocol decisions belong with your prescribing physician. Generic names used throughout. How this reference is built & how the AI is tested →
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