Safety and efficacy of a milk-derived extract in the treatment of plaque psoriasis: an open-label study.

BACKGROUND: XP-828L is a nutraceutical compound obtained by the extraction of a growth factors-enriched protein fraction from bovine milk. XP-828L may improve psoriasis. OBJECTIVES: An open-label study was performed to determine the efficacy, tolerability and safety of XP-828L in the treatment of plaque psoriasis. METHODS: Eleven adult patients with chronic, stable plaque psoriasis on 2% or more of body surface area (BSA) received 5 g of oral XP-828L twice daily for 56 days. RESULTS: All 11 patients completed the 56 days of treatment. At day 28, 6 of the 11 patients showed a reduction in PASI score. At 56 days, seven subjects had a decrease in PASI score ranging from 9.5% to 81.3%. Eight (8) out of 11 patients agreed to participate in an additional 8-week extension treatment phase. Improvement of psoriasis was maintained during the extension period. No clinically significant adverse events or laboratory abnormalities occurred. CONCLUSION: XP-828L may improve psoriasis in patients with mild-to-moderate psoriasis.