in a time of desperation, Juliet goes to the friar and he gives her a liquid that will make appear dead for 42 hrs. She agrees and takes the vial just so she doesn't have to marry Paris.
take thou vial, being then in bed, and this distilled liquor drink thou off; ...
after making sure everyone left her to rest, she started to doubt the friars plans of deceiving her family into thinking that she is dead, but in the end, she drinks from the vial. falling into an unwakeable sleep.
Romeo, I come! this do I drink to thee!
The next morning the nurse finds Juliet in her bed and raises the alarm. Her family mourns over her body