A news release says the alleged attack happened in a remote area on Sunday, after which the suspect apparently consumed some pills, causing him to become unconscious.
The young woman freed herself and then drove herself and her ex-boyfriend back from the remote area to call police in the early hours of Monday morning.
Police transported the man to hospital, where he remained under a police guard.
The suspect was later transferred to the local RCMP detachment, where he is expected to remain until a scheduled court appearance on Thursday.
The RCMP say numerous charges are being considered against the man as the investigation continues.