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Slimming tea brand Trex Tea
Slimming tea brand Trex Tea - Credit: NVWA/Trex Tea / NVWA - License: All Rights Reserved
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Dutch Food and Consumer Product Safety Authority
the Dutch Food and Consumer Product Safety Authority
Trex Tea
sibutramine
sildenafil
Lareb Adverse Reactions Center
Sunday, 14 December 2025 - 11:25

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Dutch authorities warn against slimming tea Trex Tea after dangerous substances found

Dutch authorities have issued a warning against the use of the slimming tea brand Trex Tea after tests revealed the presence of banned and potentially harmful substances, including sibutramine and sildenafil. The Dutch Food and Consumer Product Safety Authority (NVWA) urged consumers not to drink the tea and to contact a doctor if they experience health problems after using it.

Sibutramine, found in the tea, suppresses appetite but is banned in the European Union due to its serious side effects, which include heart palpitations, high blood pressure, nausea, and vomiting. Sildenafil, another substance in the tea, is a prescription drug that increases libido and sexual performance. Misuse of sildenafil can lead to heart problems, diarrhea, and blurred vision.

“This product should not be used under any circumstances,” the NVWA said. “Consumers who come across Trex Tea on the Dutch market are asked to report it to us. Anyone who has used the product and experiences side effects should consult a doctor. Side effects can also be reported to the Lareb Adverse Reactions Center.”

The NVWA noted that products like Trex Tea continue to appear on the market despite longstanding warnings. Often marketed as “natural” or safe, many slimming products sold online are imported from abroad and contain illegal and dangerous substances, making them difficult for Dutch authorities to monitor.

Authorities emphasized the need for caution when purchasing weight-loss products online. “If something seems too good to be true, it usually is,” the NVWA said.

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