The analysis of ADRs allows to detect safety signals (dangerous reactions or even sometimes in very rare cases unexpected potentially beneficial reactions, which could be expected during the intake of the medication). Analysis of all ADRs (not only those, classified as Serious ADRs) allows detect such signals more precisely and even probably earlier. I am not an expert discussing application of sentiment analysis but pharmacological companies seriously benefit having these detection done, as well medics and patients as they could after that prescribe treatment with more self-confidence or undergo streatment safer.