However, doctor Halle Mir, from Los Angeles' Cedars Sinai Hospital, has warned that the lollies could cause mood swings, lower Spears' blood sugar levels and raise her blood pressure and cholesterol levels.
The doctor also warned the magazine against the use of inhaler.
"If she's using it as a weight-loss tool, she's probably relying on epinephrine, which could suppress her appetite," Contactmusic quoted Mir, as saying.
"She's risking damage to her lungs and heart. She could even bring on asthmatic symptoms," the doctor said.