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TB-4 should be full-length thymosin 4 (43 amino acids), although some products label it "TB-500"

Do not freeze once reconstituted

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Jul 1, 2026 BPC-157 Before the FDA: Briefing Document Focuses on Ulcerative Colitis BPC-157 will be evaluated by the FDA's Pharmacy Compounding Advisory Committee on July 23, 2026