Many treatment guidelines for psoriasis rely heavily on body surface area (BSA) involvement to determine disease severity and eligibility for systemic therapies like biologics. Traditionally, patients with less than 10% BSA involvementespecially Is BPC 157 Banned? Oral vs. Injectable Forms Explained Cardiovascular Risk in Patients With Psoriasis: JACC Review Topic of the Week JACC Internet famous peptides like BPC 157 and TB 500 might be the future, but right now they're a shot in the dark.