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More people are starting their own research peptide brands in the UK than ever, and most of them go looking for the same thing: a supplier who will put their name on the vial without a huge minimum order. That supplier exists. But the label is the smallest part of what you're buying into, and the brands that get into trouble are usually the ones that only checked the label.
The terms get used loosely, so it's worth pinning them down.
You buy in volume at a lower price per vial. The vials carry the supplier's own branding, or none at all.
The supplier prints and applies your branding before dispatch, so the vial arrives as your product. The contents and the supply chain are the supplier's.
The supplier ships unlabelled, lot-numbered vials and you apply your own labels. More work for you, more control over the finish.
Most new brands start with white label, because it costs nothing upfront in printing kit and every vial arrives ready to sell.
Your logo, colours and layout are yours. A handful of things aren't negotiable, and a supplier who lets you drop them is doing you no favours:
What can't be on it matters just as much. No dosing, no effects, no before-and-afters, no outcome-led product names. In the UK, how a product is presented can turn a lawful research chemical into an unlicensed medicine, and that applies to everything you publish, not just the label. We explain why in Are peptides legal in the UK?.
Your customers will ask what's in the vial, and "my supplier says it's fine" isn't an answer. Before you order, find out exactly what paperwork comes with each batch.
Our seven checks for a fake COA work just as well on a supplier's paperwork as on a retailer's.
If a batch ever turns out to be wrong, the question is how fast you can find out which of your customers had it. That only works if every vial carries a lot number and you record which lot went to which customer. A good supplier will print the lot on every label and record it against every order. A good trade agreement will ask you to keep your side of the record too. We cover how this works in Peptide lot numbers explained.
Wholesale peptides are usually priced per box of 10 vials of the same compound and size. To work out your margin on any product:
That's your cost per vial before any trade discount.
Tiered discounts usually depend on order size. Check whether they combine with other offers.
Postage, packaging, payment fees and your time. These are what eat thin margins.
Your price has to make sense next to established sellers, or you're competing on price alone.
A supplier that publishes every price lets you do all of this before you send a single email. One that only quotes on request is asking you to commit before you know your numbers.
If a supplier can't answer these clearly, that tells you what dealing with them will be like when something goes wrong.
Our wholesale and trade accounts get box-of-10 pricing on every compound, tiered trade discounts, and their own branding designed in our label editor, printed and applied free, with no minimum order. Every batch comes with a supplier certificate, every vial carries a lot number, and the trade agreement is public, so you can read exactly what you're signing up to first.
All products supplied by Zenic Labs are for laboratory research use only and are not for human or veterinary consumption. No health, dosing or therapeutic claims are made about any product we sell.
Also worth reading
Eight things you can check yourself before ordering from any UK peptide supplier, including us. Most take under a minute.
What a lot number on a peptide vial actually tells you, how to check one, and why it matters more than any certificate if something goes wrong.
Purity is the headline number on almost every peptide certificate. Here is what it measures, what it doesn't, and the other figures worth reading alongside it.