Two Australian tourists are claiming they were poisoned while drinking at a five-star restaurant and bar in Bali.

Brianna Scott and Katie Linane, both 21, told Yahoo News they were drinking cocktails at a popular bar on Saturday night when they fell violently ill.

They were both struck down with diarrhoea, vomiting, vertigo, loss of vision and fatigue, which they initially dismissed as the effects of too much alcohol, but then became concerned when the symptoms didn’t go away after a long sleep.

Camera Icon Credit: Instagram/scottybee

“We were power spewing and we had the runs. It wouldn’t stop, we just went back to bed to sleep because that’s all we could do,” Ms Scott said.

“We were completely dysfunctional.”

The pair believe they were suffering from methanol poisoning after turning to Facebook group ‘Just Don’t Drink Spirits in Bali’ for advice.

The page’s admin Colin Ahearn arranged for vodka, which can act as a metabolic blocker to methanol, to be delivered to Ms Scott and Ms Linane. Their symptoms slowly wore off, and they were able to make it to a local hospital.

Ms Scott said it was a frightening situation.

“Katie woke up and wouldn’t touch her food, she still had runny bowels, and her eyesight had worsened. She immediately went into hysterics because she has 20/20 vision and could really tell it wasn’t OK,” she said.

“All up we were out of action for three or four days of our holiday because of two cocktails. It was not worth it and we wish we could take it back.”

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The incident comes a month after Perth teenager Bailey Chalmers came close to losing his life in a similar situation.

The 19-year-old unknowlingly consumed methanol on a Bali football trip after having two cocktails at a “reputable bar”.

About midday the next day, headaches and nausea upgraded to excruciating stomach pains, body aches, dizziness, difficulty breathing and blurry vision.

Mr Chalmers’ mother Danielle Chalmers reached out to Mr Ahearn, in Bangkok at the time, who was able to prescribe the treatment — a controlled dose of Ethanol.

Mr Ahearn said had Mr Chalmers not been able to get help in time, he most likely would have suffered long-term or permanent loss of vision.