More than 1.6 million discounted prescriptions were filled in January after the maximum co-payment for the Pharmaceutical Benefits Scheme was discounted.
The gap reduction from $42.50 to $30 means a person on a single medication a month could save up to $150 a year.
The health department data also shows 1.3 million of the filed scripts took full advantage of the $12.50 discount, with total savings amounting to $18 million.