Peptides are having a moment. Influencers and wellness clinic doctors are selling experimental peptides as the next biohacking frontier for muscle, recovery, sleep, libido, longevity, you name it. CJC 1295. Ipamorelin. BPC 157. Attenuation of Response to Repeated Drug Administration: A Proposal for Differentiating Tachyphylaxis and Tolerance The Journal of Pharmacology and Experimental Therapeutics Histamine2 receptor antagonists: Rapid development of tachyphylaxis with repeat dosing GHK Cu Copper Peptide High Quality R&D, Formulation & Manufacturing Expertise Oraltide Pharma