This is the wikipedia:
Maltose has a food value, but also has its therapeutic effects, it is warm and sweet, and dissolved in water will be turned into glucose, as a medical nutrients, can be used as a face, tonifying the spleen and energy, moistening the lungs to relieve coughs, relieve pain, moisturize the viscera, appetizer in addition to the annoyance of the pass constipation, the treatment of the spleen and stomach weakness, shortness of breath and weakness, less food, cold and abdominal pain, lungs, cough, coughing, coughing less phlegm, sore throat, and the main treatment for the weak, weak, cold and weak, and the reduction of food. Cough, dry cough with little sputum, sore throat. But the weak qi, digestive power is not enough, the body has dampness and heat, fat and sick should be used with caution, because maltose will help dampness and heat, people are easy to bloat.
Everything should be in moderation, a small amount can be eaten, eat more will not help.