Italian scientists are testing a new diet pill that turns into a clear, gelatinous blob the size of a tennis ball that may help shrink waistlines by giving dieters a sense of satiety.

The pill, currently undergoing clinical trials at Rome’s Policlinico Gemelli hospital, would be downed with two glasses of water at the first sign of a stomach rumble.

The unnamed pill is made from a cellulose compound of hydrogel, a material that’s powdery when dry but plumps up to a cousin of Jell-O when wet. The gel can soak up to 1,000 times its weight. A gram in capsule form quickly balloons from the size of a spit wad to a ball that holds nearly a liter of liquid.

Herballife total control a herbal supplement that claims to boost metabolism, give you energy and increase weight loss. Its all-herbal, low-intensity formula is supposed to give you benefits of a fat burning diet pill, without the nervousness and restlessness that some other supplements can give you.Herbalife was involved in the scandal over Ephedra, a supplement that was found to have caused heart problems in some dieters. However, Herbalife adopted a new Ephedra-free formulation in 2004, after the FDA banned the use of Ephedra.