Short term:

Whoonga’s high can lasts a few hours and typically wear off in a 6–24 hour timeframe.Upon use, feelings of euphoria and relaxation can be experienced but this is short-lived and followed by harrowing after effects. When the high wears off withdrawal symptoms such as severe stomach cramps, back ache, sweating, chills, anxiety, aggression, restlessness, depression, nausea and diarrhoea can be experienced.

Both the effects and the withdrawals depend on the mixture that was sold to the user which is related to the volume and symptoms of other drugs (and fillers) which were added to it. In overdose, lung and heart function reduction can be deadly.