does ghk-cu cause tolerance or lose effectiveness over time

Amount:20MG Typical dosing for the stack: 250 mcg BPC 157 twice daily + 2.5 mg TB-500 twice per week Low Odor Americans are injecting themselves with unproven peptides - 6abc Philadelphia https://lookaside.fbsbx.com/lookaside/crawler/media/?media_id=10238078378000755

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