Madonna has added to her crazy ass fitness regimen. She’s now injecting herself with B-6 and B-12 vitamins to boost her energy levels.

The singer, who turns 49 on Thursday, is said to have surprised passengers on a recent flight from New York to London by injecting herself with a vitamin shot in her arm. The singer is said to have refused food on the seven-hour flight and only drank bottled water.

A nutritionist weighed in:

“There is a risk of direct toxicity from excessive intakes of some nutrients. Furthermore, high intakes of some nutrients can inhibit the absorption or metabolism of others. There is no reason why multivitamin and mineral injections should be any more beneficial than supplements and may indeed be dangerous.”

Madonna is also spreading this practice to the cast of Guy Ritchie’s new movie Rocknrolla, and Britney Spears has been rumored to do the same right before she goes on stage. We all know how well she’s doing.

Source: “Madonna shocks aeroplane passengers with mid-air vitamin jab” [thisislondon] Image Courtesy of Picture Perfect, for use on Allie is Wired