How Long Does BPC 157 Take to Work? Timeline and Guide The Human Lab Rats Injecting Themselves with Peptides Office for Science and Society McGill University BPC 157 Dosing (Common Protocols), Oral Subcutaneous, 500 mcg daily, Duration: 6 weeks, Intramuscular Peritendinous, 1 mg daily, Duration: 6 weeks, Note:, Not approved by FDA or In 2023, the FDA deemed 19 peptide drugs too unsafe to be dispensed by compounding pharmacies, which mix components of approved drugs to create bespoke medication for people who have trouble taking