"The film is ready and we are planning to have the trailer launch in the first week on June. The film is set for a July 26 release," Saxena told IANS.
"Yes, it's a bold film, but it's basically a simple love story. It's a very different subject and Poonam has done a great job in the film," said Saxena.
For the role, Poonam, 22, apparently gave up her disciplined diet routine and gorged on junk food to gain weight.
The model made headlines during 2011 Cricket World Cup when she offered to go nude before Team India if they won the trophy.
"Nasha" has been produced by Aditya Bhatia.