ANAHEIM, Calif., US: Oral immunotherapy for peanut allergy entails giving people small amounts of peanuts over time to desensitise them to the legume, thus ensuring a milder reaction to peanuts in the future. Now, researchers have developed a special toothpaste that can effectively deliver allergenic proteins to immunologically active areas of the oral cavity. The new approach offers a safe and convenient alternative to allergy immunotherapy for individuals with food allergies.