Los Angeles - Miley Cyrus will have "a nurse on standby" during her upcoming UK tour.
The Wrecking Ball singer - who was hospitalised last month after suffering a severe allergic reaction to Cephalexin, an antibiotic prescribed for the flu - is on the mend but isn't taking any chances with her health.
A source told the Daily Mirror newspaper: "Miley has been under the supervision of two nurses, who are monitoring her progress 24 hours a day at her home.
"She already has a nurse on standby for when she lands in the UK. The worst thing about her illness is that there are times when she feels entirely fine but then suddenly her symptoms flare up again.
"The reaction could still affect her over the next few days but Miley is determined to put on a great show for her UK fans."
It is said the star has been prescribed steroids, while staying hydrated with intravenous drips and using an oxygen tank to assist her breathing.
The insider added: "While she was in hospital, she couldn't really eat without feeling nauseous so she started bingeing on junk food.
"Now she has been played on a strict diet of fresh fruit and veg, and is having vitamin shots to boost her immunity.
"Plus she has been banned from drinking booze or smoking anything, especially weed."