The Drug Opinion Spanish (DOS) corpus has been extracted from the web portal https://www.mimedicamento.es which is an independent platform where users share their experiences with medicines. It consists of 877 comments on the 30 drugs that had received the most reviews on this web portal as of March 14, 2017. Each comment contains information on the date it was posted, the gender and age of the consumer, the ailment treated… See the full description on the dataset page: https://huggingface.co/datasets/SINAI/DOS.