Though only feeling ill while traveling in Cambodia, British backpacker Natalie Seymour, 22, and her Canadian friend Abbey Gail Amisola, 27, were both found dead after taking drugs given to them by a local pharmacist for food poisoning, authorities said.

Seymour sent a final WhatsApp message to her mother saying she was feeling ill and “might go get something to make [her] feel better,” before she and Amisola were found unresponsive at the Monkey Republic Guest House in the southern city of Kampot on Tuesday, the Daily Mail reported.

“The hotel manager was going up and down with drinks and told them they should go to a medical center,” Seymour’s mother, Wendy Bowler, told reporters. “They decided to sleep it off but never woke up again, or that’s what I hoped. And then they were found by … I don’t know.”

Seymour and Amisola are believed to have died after overdosing on tablets they purchased at a local pharmacy, authorities said.

“We found pills for headaches and dizziness at the scene. A few of their friends came and told us the girls had eaten something bad and had diarrhea and headaches, so we think they took too much medicine,” provincial police chief Mao Chanmathurith told Khmer Times.

Officials believe the deaths were accidental and said there were no signs of foul play.

“We cannot say it was a suicide because they called for help from guesthouse staff at around 3 a.m.,” Chanmathurith said. “They were sent to the provincial hospital, where they were pronounced dead.”

Forensic tests haven’t been conducted yet and an exact cause of death has yet to be determined.

Seymour and Amisola met while visiting Bali last year.

“They were doing all these sightseeing things, she loved all that sort of stuff,” Seymour’s mother said, noting that she had bought a one-way ticket to Cambodia. “She told us every day where she was going and what she was going to be doing. She always really wanted to travel and just wanted a break from work.”

Seymour’s Instagram shows she traveled to an island off the coast of Cambodia only days ago. There were other photos of the stunning young woman’s trips to the Indonesian Gili Islands, Berlin and Milan.

In a recent tweet, she said: “Figuring out where I want to travel to is so hard because I want to go everywhere and do everything.”

Seymour’s body will be returned to England within the next three days.

Day out to Koh Thonsay island 🌴⛵️

A post shared by NATALIE SEYMOUR 🍒 (@nataliejadeseymour) on