BPC 157: Tendon Repair and More Here's a guide I created for those curious about the healing peptide BPC 157. Currently on my third cycle of this peptide (paired with TB 500 Thymosin Beta 4) and will share my experience with A peptide cycle length is how long you use a peptide before pausing or reassessing. , Too short and you wont see full results. Too long and your body adapts, making it less effective. , Every The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University