Thymosin Alpha-1An immune-modulating peptide (thymalfasin) studied in infections, cancer and COVID-19. Meta-analyses disagree on…Not authorized in Canada (approved elsewhere)
LL-37The human cathelicidin antimicrobial peptide. As a topical treatment for leg ulcers, a small first trial looked…Not authorized in Canada
KPVA 3-amino-acid fragment of alpha-MSH studied for gut inflammation in cells and mice. We found no human trials. Health…Not authorized in CanadaEvidence at a glance
Status and evidence table
| Peptide | Canada status | Human evidence |
|---|---|---|
| Thymosin Alpha-1 | Not authorized in Canada (approved elsewhere) | Moderate: some randomized human trials, specific uses (mixed, condition-specific) |
| LL-37 | Not authorized in Canada | Limited: small or low-quality human studies (topical wound trials) |
| KPV | Not authorized in Canada | Very limited: almost all animal or cell studies |
Status reflects Health Canada's peptide pages, its April 2026 advisory and the Drug Product Database as checked on November 10, 2026. Authorized products carry an 8-digit DIN (drugs) or NPN (natural health products).