Updated: October 2026
In short: According to the sources we checked, a cleansing tea that makes you lose weight or purifies the body is not documented. Many of these teas act as diuretics or laxatives, which lowers the number on the scales, not body fat. That can cost minerals and affect medication. Unsweetened tea is a good thirst quencher; you shouldn't expect more from it.
Cleansing tea, tea cleanse, purifying tea: on social media and in the drugstore, tea packs promise a flat stomach in a few days. We look at what's in such teas, what studies and consumer advocates say, what risks there are and what you can drink instead. This article doesn't replace medical advice.
What's in cleansing tea?
There is no uniform recipe. The consumer advice centre (Verbraucherzentrale) names nettle, mint, green tea extract, turmeric, healing clay or superfoods such as goji and açai as typical ingredients in cleansing products. According to its description, many of them act mainly as diuretics: nettle, horsetail and dandelion make you go to the toilet more often. That is not a cleansing effect.
It's also important what else a blend can do: the NCCIH points out that cleansing programmes with laxatives can cause diarrhoea. So if a tea has a laxative effect, that's a warning sign and not proof of an effect.
Does cleansing tea help with weight loss?
According to the sources we checked, there is no evidence for it. The Verbraucherzentrale sees no robust evidence for long-term fat reduction through cleansing diets; short-term weight losses arise from fewer calories. The NCCIH describes that cleansing diets first lead to weight loss through low calorie intake, but people regain weight as soon as they eat normally.
A 2015 review by Klein and Kiat found no randomised controlled trials in humans testing the effectiveness of commercial cleansing diets. For teas specifically, we could find no study in the sources checked showing weight loss through cleansing tea. That's why we also can't name a test winner or best cleansing tea for weight loss. Anyone who claims otherwise either has sources we don't know or is selling something.
What risks do cleansing teas have?
The risks depend on the ingredients. The following overview summarises what the sources checked name.
| Risk | Source |
|---|---|
| Diarrhoea, dehydration and poorer nutrient absorption with laxatives | NCCIH |
| Electrolyte disturbances when large amounts of water and herbal tea are drunk without food | NCCIH |
| Mineral loss with long-term use of diuretics | Consumer advice centre, ÖKO-TEST |
| Weakening of medication, such as the pill or painkillers | Consumer advice centre |
| Possible contamination with harmful plant compounds (pyrrolizidine alkaloids), anthraquinone in maté teas or pesticides | ÖKO-TEST |
If you take medication, are pregnant or breastfeed, talk to your doctor before trying tea cleanses.
What is a tea cleanse and does it work faster than normal tea?
A tea cleanse describes cleanses in which you drink certain tea blends over a longer period. That such cleanses make you lose weight faster than ordinary tea isn't documented in the sources checked. If the scales fall, it usually has to do with water and bowel contents and not with less body fat. That's why the number quickly returns after the cleanse.
This fits with what the Verbraucherzentrale says about crash diets: the basal metabolic rate can fall and the yo-yo effect looms. You'll find a sensible framework for weight loss in the article Calorie Needs for Weight Loss.
Make cleansing tea yourself: what can you drink instead?
A tea of peppermint, ginger or lemon slices is a pleasant drink without sugar. It's nothing more, and that's no drawback: if you replace lemonade, juice or coffee with milk with unsweetened tea, you save calories. That's the most understandable way tea can help with weight loss.
- Pour hot water over fresh mint
- Let ginger slices steep for 10 minutes
- Brew herbal tea cold and serve with lemon
- Drink it unsweetened so that it replaces sugary drinks
You'll find more on the subject in the article Tea for Weight Loss and on the role of tea while fasting in Tea for Fasting.
How do you recognise untrustworthy cleansing promises with tea?
A few warning signals help with teas, powders and cleanses alike.
- Waste or over-acidification that are supposed to be eliminated are mentioned. The Verbraucherzentrale says on this that waste can't be detected in a healthy body.
- The product advertises with a cleansing effect. According to the Verbraucherzentrale, that is not permitted for foods.
- There is a fixed weight figure within a few days. The NCCIH points out that the US authorities FDA and FTC have taken action against companies that made false healing promises.
- Side effects and interactions are not mentioned.
According to the Verbraucherzentrale, the Federal Court of Justice ruled in 2017 that consumers associate such advertising wording with a purifying effect. Since there is no approved EU health claim for it, advertising with it for foods and dietary supplements is not permitted. That's why paraphrases show up in shops. Whether an individual product from dm, Rossmann or the pharmacy offers something different, we can't judge from the sources checked, because we haven't opened any tests of individual brands.
How much tea is too much?
There is nothing against tea in usual amounts with meals. It gets tricky when large amounts of water and herbal tea are drunk instead of food. The NCCIH names severe electrolyte disturbances as a risk. If you fast, make sure you get enough nutrients and talk to your doctor beforehand. The article gives a practical context What Is the Optimal Fasting Duration?.
Does a tea for cleansing and weight loss make sense for constipation?
Laxative blends are not a means of losing weight. The NCCIH warns of diarrhoea, dehydration and nutrient loss with cleansing programmes with laxatives. With constipation, water, fibre and exercise help first. If the problem persists, it belongs in a doctor's hands.
If you're interested in digestion and gut, read Healthy Gut Diet.
Pairs well with frank.
If you simply like drinking herbal tea, you'll find our Organic Teas made from herbs. The teas are a drink for enjoyment and calm, not a weight-loss product.
You might also like
- Tea for Fasting
- How Many Calories Do You Need Per Day to Lose Weight Healthily?
- Juice Cleanse - What's Behind It?
Frequently asked questions about cleansing tea
Does cleansing tea help with weight loss?
It isn't documented. According to the NCCIH, an initial weight loss comes from fewer calories or from water, and many people regain weight afterwards. Unsweetened tea at most helps replace sugary drinks.
What is in cleansing tea?
Often nettle, mint, green tea, turmeric, healing clay or superfoods. Some blends contain laxative plants. Read the ingredient list and ask at the pharmacy if you take medication.
Which cleansing tea is best for weight loss?
We can't name a best cleansing tea for weight loss, because we found no evidence of an effect in the sources checked. We also haven't checked any Stiftung Warentest test winner.
Is cleansing tea healthy or harmful?
A pure herbal tea in usual amounts is generally harmless. Problems arise with laxative or strongly diuretic blends, according to the Verbraucherzentrale for example through mineral loss and interactions with medication.
Can you make cleansing tea yourself?
Yes, from mint, ginger, lemon or other herbs. It's a sugar-free drink, but it doesn't cleanse the body and doesn't make you lose weight in a targeted way.
What does a tea for cleansing do?
The liver and kidneys take care of metabolism and excretion. A tea can provide you with fluid and feel good as a warm ritual; the sources checked document no more than that.
Note: This article is for general information and does not replace medical or therapeutic advice. If you have symptoms or pre-existing conditions, are pregnant or take medication, please speak to your doctor first.
