The Department of Health (DH) said today (March 28) that the product was not registered in Hong Kong, nor was it imported.
People who are using this product should stop taking it immediately and seek medical advice as soon as possible if they feel unwell.
Sibutramine can increase blood pressure and heart rate, so it is not suitable for patients with heart disease. Thyroid hormone can cause side effects such as tremor, heartbeat, sweating, insomnia, headache and arrhythmia.
Products containing these ingredients must be registered as pharmaceutical products before they can be sold, and they are prescription drugs. They can only be purchased with a doctor's prescription and under the supervision of pharmacists.