A woman has been arrested after police say she admitted to trying to put her boyfriend into an 'eternal sleep' by slipping him Drano.

Elle Yoshio Weissman, 43, was arrested on Tuesday in South Salt Lake, Utah, where she allegedly slipped her 50-year-old boyfriend the drain cleaner claiming it was his medicine.

According to a jail booking report, the man was partially asleep on Monday night when Weissman fed him 'a spoonful of Drano', KSL-TV reported.

'Elle stated that her intention was to give her boyfriend Drano so that he would go into eternal sleep,' the report said, saying that Weissman added 'that by eternal sleep she meant death.'

Elle Yoshio Weissman, 43, (left) was arrested on Tuesday in South Salt Lake, Utah, where she allegedly slipped her 50-year-old boyfriend Drano (right in stock image)

The report says that Weissman knew that Drano could kill the man and that was her intention.

Police say that the man began to suffer excruciating pain after consuming the drain cleaner.

He hailed a ride-sharing service which transported him to an urgent care center.

Police were called to the urgent care center where they questioned Weissman and made the arrest.

She was charged with surreptitious administering of certain substance and attempted murder, both second-degree felonies.

On Friday, Weissman remained in custody at the Salt Lake County Jail pending bond of $100,000, jail records show.

It was unclear whether she had an attorney who could comment on her behalf.