Medicines in the health system - Australian Institute of Health and … 07.07.2022 · There was an initial surge of prescribing hydroxychloroquine in March 2020, followed by a reduction over the next 2 months (Figure 6). Since then, there has been no indication that there is widespread off-label prescribing, with script volumes following a similar pattern to the previous year. There was a 6% increase to around 325,000 scripts ...