Skip to content
London Drip Clinic

How evidence works

Not all evidence is equal. Here is where drips fit.

Doctors weigh up evidence on a scale, from large reviews of many trials down to individual experience. Here is that scale, and an honest look at where IV drips sit on it.

Strongest evidence at the topWhere IV treatments sit
Systematic reviews
Pool all the good trials on one question
IV fluids for dehydration IV iron for iron deficiency anaemia
Randomised controlled trials
Compare a treatment with a placebo, chosen by chance
Vitamins for a proven deficiency High-dose vitamin C in hospital research, with mixed results Myers-style drips: one small trial, no clear benefit over placebo
Cohort and case-control studies
Follow groups of people over time and look for links
Very little for wellness drips
Small studies and case reports
What happened to a small number of people
NAD+ drips Glutathione drips
Experience and expert opinion
What patients and clinicians report
Most vitamin drips for people who are already well

Grey tags are established medical uses. Black tags are wellness uses, where the evidence is limited. We place each treatment by the strongest evidence we know of for that use.

What this means for you

When there is a medical reason, such as dehydration or a proven deficiency, IV treatment rests on strong evidence. For people who are already well, there is no high-quality evidence that vitamin drips improve health.

That doesn’t make them unsafe when they are given properly, and it doesn’t make them pointless if you enjoy them. It means they are a wellness choice, like a massage or a sauna, and we will never tell you otherwise.

So why do so many people choose them?

IV drips have become hugely popular in the US and across the UK, and many people tell us they like how they feel afterwards. That experience is real, and we respect it.

But experience is not the same as proof. Feeling better after a drip can come from many things at once: the fluid itself, an hour of rest, being looked after, and the expectation that it will help. Good trials are designed to separate these, and for most wellness drips those trials haven’t been done yet.

So we keep it simple. We tell you what is in each drip, give it safely, and let you decide.

Our promises

No promised results

Drip names describe what is in them, never what they will do for you.

Tests first when it matters

If your symptoms point to something that needs checking, we will say so before booking a drip.

Kept up to date

We review this page as new research is published, and change it when the evidence changes.

GP-led and medically reviewed by our clinical team. Updated October 2026.