The following adverse reactions associated with the use of sacrosidase were identified in clinical studies or postmarketing reports. Because some of these reactions were reported voluntarily from a population of uncertain size, it is not always possible to reliably estimate their frequency or establish a causal relationship to drug exposure. In clinical studies of up to 54 months duration, a total of 52 patients were treated with Sucraid. The reported adverse reactions (number of patients) were as follows: abdominal pain, vomiting, nausea, diarrhea, constipation, insomnia, headache, nervousness, and dehydration. Hypersensitivity reactions (wheezing, rash, and pruritis) have been reported.