There are dawa bazars (medicine markets) where one can easily get consignments of fake medicines especially in Agra, Patna, Lucknow and Ghaziabad, they said.
The maximum of such illicit products are in the 'fast moving drug category' which includes medication for cough, fever, cold and even Viagra, sources said.
Drug controller officials said the racket is so well entrenched that criminals have their own line of production and supply chain targeting mainly rural areas.
While the presence of spurious or adulterated medicines in major cities like Delhi is 'negligible', sources said it has become a major transit point for drug cartels.
"Delhi has an excellent transport system and better infrastructure. Drugs come in from Haryana and Uttar Pradesh into the national capital which are then diverted to other neighbouring states like Rajasthan," an official source said.
"It does not need much investment to set up an illicit manufacturing unit. Such units can function from even small garages. The profits can be as high as 90 per cent," the source said.
Image: There are dawa bazars (medicine markets) where one can easily get consignments of fake medicines.