The reported cure might come in handy for England fans today Credit: Peter Macdiarmid/LNP An off-the-shelf supplement may be able to cure hangovers – but only for women, a scientific study has found. Researchers in the United States found N-acetylcysteine (NAC), a liver-protecting supplement also given to asthmatics and cystic fibrosis sufferers, alleviates hangover symptoms for women. Men, however, appear to get no benefit at all from the pills. Purported hangover cures – two paracetamol tablets before bed, having a cup of water between drinks, a Berocca in the morning alongside a full English breakfast – have devout supporters, but few are grounded in scientific research.