A Brazilian student shared a tab of LSD with two friends in the hours before he was Tasered by police and died, an inquest has heard.

The drug left him paranoid, restless, and possessing "superhuman strength" as he tried to avoid arrest, the Coroner's Court at Glebe was told today.

The coronial inquest has begun into the sudden death of Roberto Laudisio Curti, who died following an altercation with police during which officers fired their Tasers at least 14 times as they tried to restrain him.