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Naranjo Algorithm

Naranjo CA, Busto U, Sellers EM, Sandor P, Ruiz I, Roberts EA, et al. A method of estimating the probability of adverse drug reactions. Clin Pharmacol Ther. 1981;30(2):239-45.

To assess the adverse drug reaction, please answer the following questionnaire and give the pertinent score.

Score Interpretation

___Definite: ≥ 9

___Probable: 5 to 8

___Possible: 1 to 4

___Doubtful: ≤ 0

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