5813
3 . Similar amounts of dosed radioactivity were excreted via faeces ( 51 . 9 % ) and urine ( 46 . 4 % ) by 168 h post - dose , suggesting that at least approximately half of the administered dose is absorbed from the gastrointestinal tract .
 None
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 None