Kuwait has said 23 people have been killed by alcohol contamination in the past week and dozens more are being treated for poisoning in hospital.
The Kuwaiti Health Ministry said 160 people, most of them from Asia, had suffered methanol poisoning since Saturday.
Most of the victims in medical care needed assisted breathing and kidney dialysis. Methanol is an industrial substance not meant for human consumption, but sometimes finds its way into home-made or counterfeit drinks.
"The Ministry of Health warns and urges the public to avoid such behaviour to preserve lives," it said. It said there was a "continuous medical and security follow-up around the clock".
A ministry report on Wednesday said 21 people were blinded or complained of visual impairment because of poisoning.
India's embassy in Kuwait said on Wednesday that about 40 Indians had been taken to hospital in recent days, some of whom had died. It did not give the reason for their sickness.
The embassy said it was "following up with concerned hospitals" and the health ministry to ensure "proper treatment of Indian patients".
Nine people died in Jordan in a case of mass alcohol poisoning in June when 47 needed medical treatment. The case was referred to a criminal court.
