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The biguanide class of antidiabetic medications , which also includes the withdrawn agents phenformin and buformin , originates from the French lilac or goat 's rue ( " Galega officinalis " ) , a plant used in folk medicine for several centuries .
 Galega
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Galega