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10.1089/10430349950018562 62 YamamotoK.MorishitaR.HayashiS.MatsushitaH.NakagamiH.MoriguchiA.et al

doi: 10.1007/s00134-015-3934-7
TB-500 excels at muscle and tendon repair

Systemic and Long-Term Risks These are extremely rare, but its important to watch out for: Immune Reactions : Since its synthetic, BPC 157 could trigger allergic responses or immune reactions

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The best method depends on your target (scalp vs face vs systemic) and comfort level
