Is Mayo Clinic Tobacco Quitline open 24 hours a day?
Counselors are available between the hours of 8 a.m. to 11 p.m. Monday through Friday or 9 a.m. to 6 p.m. Saturday EST and 11 a.m. to 5 p.m. Sunday (EST). Registered nurses at Ask Mayo Clinic are available 24 hours a day, 365 days a year to help with withdrawal symptoms. A voice messaging system is available 24 hours day; if you leave a message, your call will be returned the next business day.