In brief: The liver and kidneys handle the body's detoxification naturally. No herbal infusion can "purify" the body in any specific way. That said, certain diuretic plants (nettle, cherry stalk, dandelion) and choleretic ones (artichoke, rosemary) can support these functions over a short course of 2 to 3 weeks. No course should exceed 3 weeks without medical advice.
The detox herbal infusion is a heavily marketed concept with limited scientific grounding. Before going further, one thing needs to be clear: the liver and kidneys continuously handle the body's detoxification. No food or herbal infusion does that work for them. However, certain plants can support these natural functions as part of a short, considered course.
Detox: what the science actually says
The word "detox" has no standardised medical definition. Medically, detoxification refers to the treatment of actual poisoning (from medications, heavy metals and similar), which is handled in clinical settings. In everyday language, "detox" tends to mean supporting the body's elimination organs (liver, kidneys, intestines, skin, lungs).
The EFSA has not approved any specific health claim of "detoxification" for herbal infusions. The benefits attributed to them are based on known properties of certain plants: mild diuretic drainage, support of bile function, stimulation of transit. These effects are real but modest, and they do not miraculously cleanse the body.
Draining plants: mild diuretic effect
Several plants modestly increase renal elimination. These are the most common in so-called "detox" infusions:
- Nettle (Urtica dioica): traditional use recognised by the EMA. See our nettle guide.
- Cherry stalk: traditional diuretic use, for short courses of 7 to 10 days.
- Dandelion (Taraxacum officinale): leaf and root, documented diuretic and liver-supporting properties.
- Birch (Betula pendula): leaf, mild diuretic recognised by the EMA.
- Meadowsweet (Filipendula ulmaria): mild diuretic, contains salicylate derivatives.
Choleretic plants: liver support
Other plants stimulate the production or flow of bile, thereby supporting liver function:
- Artichoke (Cynara scolymus): well-established use recognised by the EMA for digestive complaints and support of fat digestion.
- Rosemary (Rosmarinus officinalis): traditional use recognised. See our rosemary guide.
- Milk thistle (Silybum marianum): well-established use for liver protection, particularly in standardised silymarin extract form.
- Black radish and boldo: traditional uses for biliary support.
A simple detox course recipe
A balanced course combines kidney drainage and liver support:
- Nettle + cherry stalk + dandelion (drainage), in equal parts.
- 1 tablespoon per 500 ml of simmering water.
- Steep for 10 minutes, 2 cups a day, over 2 to 3 weeks.
- Stay well hydrated alongside: at least 1.5 to 2 litres of plain water daily.
- Allow at least a 2-week break between courses.
When to consider a detox course
The most common times:
- Spring: after winter, to support seasonal drainage.
- After the festive season: to ease the transition back to lighter eating.
- At a change of season: a naturopathic tradition.
- Before a nutritional programme: to prepare the body.
A course should last 2 to 3 weeks, no longer. Beyond that, the benefits decrease and the risk of unwanted effects increases.
Important precautions and contraindications
- Pregnancy and breastfeeding: avoid draining plants as a course. The liver and kidneys are already managing elimination; there is no need to stimulate them further.
- Kidney or heart failure: intensive drainage can disrupt mineral and fluid balance. Medical advice is essential.
- Gallstones: choleretic plants (artichoke, rosemary, black radish) are contraindicated in cases of bile duct obstruction.
- Kidney stones: use diuretics with caution if you have a history of stones.
- Diuretic medication: an additive effect is possible. Let your doctor know what you are taking.
- Liver disease: avoid detox courses without medical advice. Some plants can place additional strain on an already vulnerable liver.
- Extended courses: no course should exceed 3 weeks without professional supervision.
The ANSES (French food safety agency) has repeatedly raised concerns about the inappropriate use of draining plants, particularly in prolonged self-medication.
Disclaimer: the information in this article is for educational purposes only and does not replace medical advice. No "detox" herbal infusion treats or prevents any medical condition. Persistent symptoms require medical attention, not a course of plants.
Sources: European Medicines Agency, Community herbal monographs (Urtica dioica folium, Cynara scolymus, Taraxacum officinale, Betula pendula) · ANSES, opinion on draining food supplements · EFSA, evaluations of health claims on plants.
Written by
Julien Huot, founder of Thés & Traditions. Tea selector since 2016, trained in tasting and passionate about sharing the cultures of tea and herbal infusions.
Published 10 April 2019 · Updated 21 May 2026
Frequently asked questions
- Not really. Any effect on weight is modest and mostly due to temporary water loss through drainage. Fat is not reduced by drinking an infusion.
- 2 to 3 weeks maximum. Beyond that, the benefits diminish and side effects (dehydration, mineral loss) become more likely.
- No, it is not advised. The body already manages elimination during pregnancy; there is no need for artificial stimulation.
- A combination of drainage and liver support works best: nettle, cherry stalk and dandelion for drainage, plus artichoke or rosemary for the liver. Always keep it to a short course.
Going further
To explore more, take a look at our nettle guide, our rosemary guide, or our flat stomach guide. Ready to try it yourself? Browse our organic range.