Herbal remedy illegally contains corticosteroid dexamethasone, Dutch researchers say
The Netherlands Pharmacovigilance Centre Lareb has once again identified unauthorized pharmaceutical substances in Montalin, an Indonesian herbal supplement marketed as a natural remedy for pain relief and cholesterol reduction. The watchdog issued a warning after a consumer developed symptoms linked to excessive corticosteroid use, raising fresh concerns over the safety of the product.
Laboratory analysis confirmed that Montalin capsules contained dexamethasone, a potent corticosteroid not listed on the packaging. The affected individual exhibited signs of Cushingoid syndrome, including a round face and muscle weakness, conditions associated with prolonged corticosteroid exposure.
Montalin, sold online and promoted as a plant-based supplement containing five different herbal ingredients, has a history of being adulterated with pharmaceuticals. Previous investigations by Lareb found undisclosed painkillers such as paracetamol and meloxicam in the product, highlighting an ongoing issue of illegal drug additions.
The presence of dexamethasone in Montalin is particularly concerning due to the serious health risks associated with corticosteroid use. These drugs can suppress the immune system, cause weight gain, osteoporosis, high blood sugar, and hormonal imbalances. Prolonged or unsupervised use can result in severe medical complications.
“Users of Montalin may unknowingly ingest a powerful corticosteroid, which could lead to unintended and potentially severe health effects,” Lareb warned. The organization urged consumers to be cautious when purchasing herbal supplements online, emphasizing that product labels do not always accurately reflect their contents.
Following Lareb’s findings, the Dutch Food and Consumer Product Safety Authority (NVWA), the Health and Youth Care Inspectorate (IGJ), and the National Poisons Information Center (NVIC) have been notified. Authorities are now investigating the distribution of Montalin in the Netherlands and considering regulatory measures to address the issue.
Consumers who have used Montalin and experienced unusual symptoms are advised to seek medical attention and report their cases to Lareb.
