Compare peptide supplies side by side

Two to four products from the same category, side by side, with every specification explained in plain words and the differences marked. Pick a category, then add products, or arrive here from a product page with the comparison already set up.

What this tool can and cannot tell you

Every row is a specification recorded from the product's own listing: gauge, barrel capacity, what one line on the barrel is worth, cap size, how a cooler cools and for how many hours, the active ingredient in a wipe, whether a sharps container is certified. Rows where the two differ are highlighted and rows where they agree are left plain, so the shape of the difference shows before you read a word. It only works inside one category: the specifications recorded for a syringe and for a cooler are not the same specifications, and one table holding both would only look like a comparison.

Three things it deliberately does not do. It does not rank products: where a page says "best for", that is worked out from the numbers in the table and nothing else, and there is no scoring hidden behind it. It does not show prices, because the price is whatever Amazon is charging in your country at the moment you click, and a number printed here would be stale by the time you read it. It says nothing about what to put in any of these things, how much, or whether any of it suits you — those are questions for the product's own labelling and for whoever supplied it. For the reasoning behind a choice rather than the numbers, the guides and the written comparisons below go further than a table can; for the words themselves there is the glossary, and for the arithmetic the calculators.

Specifications come from PepPrep's product records, which were recorded from the Amazon listing on the date shown on each product page. "Best for" is only ever worked out from the numbers, never from opinion. Affiliate links; your price is the same.