Pharmacists have warned that patients suffering with various heart diseases, mental illness and other health conditions, who need an immediate medication, may be forced to wait for their drug due to obstructed deliveries from Pfizer as it recently decided to follow an industry-wide distribution system.

A Spokesman of Pfizer explained that according to the industry wide distribution system, many pharmacies get up to two free deliveries a day of drug brands other than Pfizer. The company will offer around five free deliveries, a month, and critical products will be delivered free on the same business day, wherever possible.

Additionally, a report compiled by its rival wholesalers suggests that Pfizer's mission to become sole distributer of its products has damaged the distribution system, backed by $180 million in federal subsidies.

Professor Ian Harper, the author of the study tagged the Pfizer move ''threatens timely and reliable access to PBS medicines''.

The National Pharmaceutical Services Association, which represents two of the three pharmaceutical wholesalers, claimed that a majority of pharmacists had given their support this week to a call for the Pfizer arrangements to be scrapped.

“We have been overwhelmed with hundreds of responses from pharmacists sharing the same concerns”, added the acting President, Mark Hooper.