What FK-16 is
FK-16 is ll-37 derived 16-amino-acid antimicrobial fragment. It sits within immunomodulator research (T-cell, antimicrobial). Pepture keeps FK-16 in the library as a tracking target only, the app records what you enter but makes no recommendation about whether the compound is appropriate for you. That decision belongs with a licensed clinician.
Published pharmacokinetic data places the half-life of FK-16 at roughly 2 hours, and doses recorded in the community cluster around the 500 mcg to 1 mg range. Individual protocols vary widely. Jurisdictional status (FDA-approved, prescription, or research only) depends on the specific formulation and country.
How people track FK-16
In Pepture, FK-16 is typically logged alongside symptom log, CBC and CRP when available, sleep quality, so cycle impact can be reviewed at the end of a block rather than by memory. The app captures dose, site, reconstitution ratio, cycle day, and any subjective rating you choose to add.
If you are considering FK-16 but have not started, or if you have started and want a second opinion, speak with a licensed clinician before changing any dose or cycle pattern.
Reconstitution math
Open the pre-filled FK-16 reconstitution calculator to compute syringe units per dose.
Reported Side Effects of FK-16
Effects below are summarised from peer-reviewed literature or regulatory labeling where it exists. Not medical advice. Individual responses vary.
Compare FK-16
How FK-16 stacks up against the peers most users consider.