What is “microdosing” — and is it safe?

Medically reviewed by Muhammad Adnan, GPhC-registered Superintendent Pharmacist · Last updated June 2026

What microdosing means

“Microdosing” means taking a lower dose of a weight-loss medicine than the standard, licensed schedule. People usually try it to save money, to make a pen last longer, or to reduce side effects. It's become common — in 2025, around a quarter of people using weight-loss injections reported microdosing in some way.

Does it actually work?

There's no good evidence that it does. Microdosing hasn't been tested in clinical trials — only the standard licensed doses have been studied and shown to be both safe and effective. Taking less than the proven dose may simply mean you don't get the result you're hoping for.

Our approach

We keep it simple and safe: we follow the licensed, manufacturer-approved dosing schedule, with the dose increased gradually to limit side effects. We don't encourage unsupervised microdosing or dose-splitting. If your dose ever needs adjusting — up or down — your pharmacist makes that decision with you, for a clinical reason, at your face-to-face monthly review.

Worried about cost or side effects? That's exactly the kind of thing to raise at your consultation — there are safe, sensible ways to manage both without resorting to unproven dosing.

Microdosing FAQs