Before you buy anything — what to bring to the conversation.

Why this page exists

PeptideCompare compares price and verification data across EU vendors. We don't publish protocols, dosing schedules or instructions for self-administration — that's a deliberate line, not an oversight. But before any of that comparison data is useful to you, there's a step that has nothing to do with which vendor is cheapest: deciding, with a doctor, whether a research compound makes sense for your situation at all.

Talk to a doctor first — not after

Research peptides are not approved medicines. There is no prescribing physician checking your history against the compound by default — that step only happens if you create it yourself, by bringing the conversation to a doctor before you order anything. A physician open to discussing research compounds can flag interactions with medication you're already on, conditions that change the risk picture, or simply tell you that an approved alternative already exists for what you're trying to achieve.

Health factors worth raising specifically

Some circumstances change the risk-benefit picture enough that they're worth naming explicitly in that conversation, rather than leaving a doctor to guess what's relevant:

Baseline bloodwork — what doctors commonly use as a reference point

A baseline panel, drawn before starting anything, is what lets a later conversation distinguish "this changed because of the compound" from "this changed because of something else entirely." Which markers matter depends on what you're discussing with your doctor, but panels commonly referenced in this context include:

In most EU countries, this panel is ordered through a GP referral; some countries also allow direct private testing without one. Either way, the point of drawing it now isn't to self-interpret the results — it's to have a documented "before" picture your doctor can actually compare against later.

A note on legal status and sourcing

Research peptides sold "for research use only" are not approved for human use anywhere in the EU. That label is a real legal distinction, not a technicality to look past. If you want to understand exactly what that means and how to evaluate whether a vendor and its documentation are trustworthy, those are separate, dedicated guides — not something to gloss over here.