We sell peptides by the box.

Four Performance is a Canadian-owned research supplier built around one idea: buying a single vial at a time is the most expensive way to do it.

Every vial you order carries its own share of packaging, cold handling, payment processing and courier cost. Order one, and you pay all of it. Order ten in a sealed box, and that overhead is paid once and spread across the lot. That is the entire trick — there is no cheaper compound and no thinner fill behind it. It is why our cheapest kit lands at $19.90/vial.

Every kit ships as ten identical vials drawn from a single lot, with one batch number printed on the carton and one Certificate of Analysis covering all ten. Purity and identity are verified by third-party HPLC and mass spectrometry before a batch is released — and the report is published against that batch number, so you can check what is actually in your hands rather than take our word for it.

We ship domestically only. That means faster delivery, no customs exposure and clear accountability when something goes wrong. Everything sold here is supplied strictly for in vitro laboratory research. It is not a drug, supplement or food, and it is not intended for human or veterinary use.