Supplement analysis backed by scientific evidence · PT

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Limited evidenceWeight management

Detox Tea Blends

Slimming teas built around senna and other stimulant laxatives, sold as detoxification. The weight that comes off is water and stool, the detoxification premise has no scientific basis, and this category has a documented record of serious harm and undeclared pharmaceutical adulteration.

Evidence last reviewed: August 2026

What the science says

  • No demonstrated weight-loss benefit Limited evidence

    A 2026 mini-review of diet and detox teas identified only ten studies, mostly case reports and product analyses, and concluded the evidence offers minimal support for weight loss. An earlier critical review of detox regimens in J Hum Nutr Diet reached the same conclusion and found no rigorous controlled trials underpinning the concept.

  • The detox premise is not supported Limited evidence

    The critical review found no clinical evidence that commercial detox products enhance elimination of toxins or improve any measure of health; the liver and kidneys perform this function without help. Named toxins are almost never specified by the products themselves.

  • Documented harms and adulteration Limited evidence

    The 2026 review catalogued electrolyte disturbances, cardiovascular events and liver injury in otherwise healthy users, plus analytical findings of undeclared pharmaceutical ingredients and stimulants. A case report in Clin Toxicol described portal vein thrombosis linked to senna use.

Dosage & safety

Studied doseWe do not recommend a dose. Where a stimulant laxative is genuinely needed for constipation, senna is a short-term medicine used for no more than about a week, not a daily product.
SafetyRegular stimulant laxative use causes potassium loss, dehydration, dependency and cramping; hypokalaemia can trigger arrhythmias and is dangerous alongside diuretics, digoxin or corticosteroids. Reports include liver injury and, in one case, portal vein thrombosis. Senna reduces absorption of co-administered drugs and has interacted with tacrolimus in a transplant patient. Avoid entirely in pregnancy, breastfeeding, inflammatory bowel disease, and in anyone with a current or past eating disorder, for whom these products are a particular hazard.

Scientific references

Where to buy

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