Decades-old drug in two Australian trials related to Covid-19 but experts urge caution

Health minister Greg Hunt has asked for an urgent briefing on hydroxychloroquine but it has been known to cause heart damage and toxicity

The health minister Greg Hunt has asked for an urgent briefing about the clinical trial of a decades-old drug in the prevention of Covid-19, as countries race to find a way to prevent serious cases and slow the spread.

But infectious disease experts have warned the drug, hydroxychloroquine, is far from proven as effective in treating Covid-19 and that it could take several months for results to be conclusive. In previous studies for other conditions, hydroxychloroquine has been shown to cause heart damage and toxicity.

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