6618
The most common adverse effect of metformin is gastrointestinal irritation , including diarrhea , cramps , nausea , vomiting , and increased flatulence ; metformin is more commonly associated with gastrointestinal adverse effects than most other antidiabetic medications .
 disease: adverse effect; disease: diarrhea
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 disease: adverse effect; disease: diarrhea