The drink, which is made from the herbs damiana and ginseng, is the national drink of Fiji, where she and her dancer husband are currently honeymooning, and hotel staffers have revealed that Britney has a drink every day despite the fact that it tastes very bitter.

Insiders also added that the Toxic singer's drink is an aphrodisiac and helps conception as well as enhances beauty.

Her husband, Kevin Federline has also been drinking Kava and his potion is made out of ginseng, muira puama, damiana and epimedium. It helps in maximising a man's sexual prowess and increasing his sperm count.

"She's doing everything she can to prepare herself for having a baby. The resort bar has been preparing the special Kava mix. Usual blends of the cocktail can aid sleep but the one they have been drinking is an aphrodisiac and helps conception," The Sun quoted an insider as saying. ANI