Lemon and honey combine to make an effective and delicious digestive tonic, especially after you've eaten a greasy meal. Make the tonic using 1 teaspoon of raw honey with the juice of 2 teaspoons of lemon juice in a glass of lukewarm water. Fresh lemon juice helps restore and balance your body's pH, cleanses your liver and provides nutrients such as vitamin C, vitamin B and riboflavin. Lemon also acts as a blood purifier, a cleansing agent and tonic for your liver by helping it produce more bile, says Akilah El, a naturopathic doctor.