Unscrupulous traders have been using religion to sell their illegal health products, reported Harian Metro.
The traders, according to the daily, would use pictures of Muslims carrying out various acts of faith, such as circling the Kaabah or reading the Quran, on their products to attract customers.
A Health Ministry spokesman said a recent raid in Shah Alam showed that most of the goods found at the premises were not registered with it.
"Initial investigation shows that sinus pills found during the raid with images of the Kaabah on the packaging are not registered with the Health Ministry and can't be sold to the public.
"It is alarming that the pills are being sold in surau and mosques," he said, adding that the pills were found to contain scheduled poisons mixed with other chemicals.
Sultan Zainal Abidin University lecturer Mohd Shahrizal Nasir urged consumers to check the authenticity of the products before buying them.