About PepPrep

PepPrep (pepprep.net) is an independently run guide to the supplies around peptides: mixing water, insulin syringes, alcohol pads, sharps containers, cold storage and travel gear. It holds no stock and sells nothing itself; every product page links to Amazon, and the only income is Amazon’s affiliate commission when someone buys through those links.

The peptide world has a thousand stores selling the exciting part and almost nobody making the boring part easy. We do the boring part.

What we list

PepPrep curates the ordinary, legal supplies people need around peptides: mixing water, syringes, alcohol pads, storage cases, mini fridges, travel coolers, scales, logbooks. Most are general-purpose products you could buy at any pharmacy or lab-supply shop. The injectable-grade mixing fluids are the exception — those are labelled pharmaceutical products and are prescription-controlled in some countries, including the US. See the legal page for what that means.

The catalogue is accessories, plus two short everyday shelves described below — we leave peptides, hormones and research chemicals to others. Keeping that line bright is what lets this stay a simple, everyday guide where everything is exactly what the label says.

The two sections that aren't accessories are Vitamins & Supplements, everyday pharmacy-shelf products (electrolytes, protein, magnesium, fish oil), and Move & Recover, a short fitness shelf (resistance bands, a kettlebell, a foam roller). The supplements are food, not medicine. We describe what each one is and what people commonly use it for, and we make no claims about what any of them does. If you take any medicine, ask a pharmacist before adding a supplement.

How the site works

We don't warehouse anything. Every product page links to Amazon: Amazon takes your payment, ships it (often next-day with Prime), and handles returns with their normal policy. We earn a small affiliate commission when you buy through our links, and your price is identical either way — that commission is how the site pays for itself, and we tell you about it on every page rather than burying it. Full disclosure here.

How we pick what goes in the catalogue

Every entry starts with a job somebody actually has to do — get liquid into a vial, keep something cold on a flight, throw a needle away legally — and the product is chosen to do that job. Not the other way round. In practice that means five rules:

  • Boring and widely stocked beats clever. A product that has been made the same way for twenty years and is in stock everywhere is worth more than a novel one with better photographs.
  • Sterile where sterility matters, and not where it doesn't. Some things need to be sealed and single-use. A vial rack does not. We say which is which rather than charging you for sterility you have no use for.
  • Pack sizes you will finish. The 500-count box is only cheaper if you get through it. Where a smaller pack makes more sense we link the smaller pack.
  • Nothing that depends on a claim we cannot check. If the only reason to buy something is a promise on the label with nothing behind it, it does not go in.
  • Every product gets a picking tip. One sentence on what to actually check in the listing, because two products with the same name are routinely not the same product.

The catalogue is currently 169 products. It is deliberately small. Adding a second-best version of something we already list would make the site bigger and less useful at the same time. The FAQ answers the questions this page raises most often — how the links work, what we do and do not check, and why there are no peptides on a peptide-supplies site.

What we deliberately don't do

  • We don't sell peptides or any medication. Not as a hedge — the catalogue simply has none, and that is what keeps this an ordinary accessories guide.
  • We don't tell anyone how much of anything to take. The calculator converts an amount you already have into marks on a syringe. It is arithmetic, and it will not suggest a number to you.
  • We don't take payment for placement. No brand can buy a spot, a badge, or a kinder write-up. The only money involved is Amazon's standard affiliate commission. Amazon sets that rate for each product category, and no brand pays us anything on top of it, so a listing gets picked for the product itself, not for what it earns us.
  • We don't make health claims. The guides describe objects and how to handle them. They do not describe outcomes.
  • We don't require an account. There is nothing to sign up for in order to read anything, and nothing on the site needs your name.

How the guides are written

Everyday words first: if a guide has to use a technical term, it explains it in the same sentence, and anything that reads like it was written for a pharmacist gets rewritten. Where a rule is involved — what you may carry through airport security, how a sharps container is legally disposed of — we point at the body that actually sets the rule rather than paraphrasing it and hoping. Where the answer changes depending on where you live, the guide says so instead of quietly assuming you are American.

Guides are about products and handling. Anything that crosses into treatment is out of scope on purpose, and for that you want a clinician, not a shopping site.

Where the facts come from

  • Product specifications are recorded from Amazon listings. Where a page prints the date they were recorded, the listing itself is the authority after that date, because listings change.
  • No ratings, scores or test results. PepPrep publishes none. Each product gets a picking tip instead, saying what to check in the listing before you buy.
  • Rules come from the body that sets them. For airport security, sharps disposal and product labelling, the guides point to that authority instead of restating it. The full list, by country, is on Where to check official information yourself.
  • The calculators show their working on the page. The reconstitution calculator is arithmetic only, and the temperature-loss calculator states the rule of thumb its estimate rests on.

When we get it wrong

Two things go stale on a site like this: a listing changes underneath us, and a rule changes after we wrote about it. Both happen. If you find either — a link pointing at the wrong item, a price that has quietly tripled, a seller substituting something cheaper, or a guide that is simply out of date — send it to the address below and it gets fixed. Corrections are not a formality here; a picking tip that is wrong is worse than no picking tip at all.

What changed recently

  • : the luer-lock vs luer-slip comparison page was merged into the guide Luer-lock vs luer-slip syringes, because the two answered the same question. The old address redirects there.
  • : the quick units-to-mL guide was merged into the full insulin syringe units to mL guide, because both answered the same searches. The old address redirects there.
  • By : three product pages had been withdrawn because Amazon did not sell those products anywhere: Sterile Saline (0.9% Sodium Chloride), Bacteriostatic Sodium Chloride 0.9% and an Injection Site Rotation Chart. Their old addresses answer “gone” (HTTP 410) instead of pointing somewhere else. The single-dose saline vials listed now are a different product, for nasal sprays and rinsing.

Who is behind it

PepPrep is independently run. No brand sponsors the picks and nobody pays for placement; the only income is the Amazon commission on links you choose to click. Questions, corrections and product suggestions are welcome at hello@pepprep.net, and the privacy page explains what the site records and who is responsible for it.

Contact

Questions, corrections, or a product we should add: hello@pepprep.net

Nothing on this site is medical advice, and our guides describe products, not treatments. For anything health-related, talk to a licensed clinician.