Less than three months after Florida voters narrowly rejected a plan to legalize medical marijuana, a Republican senator Monday filed a bill that would allow patients to get pot if they suffer from diseases such as cancer, AIDS, epilepsy or multiple sclerosis.

The proposal (SB 528), filed by Sen. Jeff Brandes, R-St. Petersburg, includes a detailed regulatory structure that would place requirements on patients, doctors, growers and retail stores. Patients could only get “medical-grade” marijuana if their physicians sign off on the need.