Date Published

September 29, 2016

Updated For

ALS PCS Version ALS PCS Version 5.2


Question: Is daily, low dose ASA considered towards 'NSAID use in the past 6 hours,' as per the Adult Analgesia Medical Directive?


At a daily low dose of 81 mg, ASA has a negligible NSAID property and therefore would not be a contraindication of NSAID or Ibuprofen use within the previous 6 hours.

It is, however, important to distinguish between daily low dose ASA and regular ASA. A patient who was taking regular ASA for their pain or any other reason within the past 6 hours would meet the contraindication. If any doubt exists to the amount taken, it is reasonable to hold off on administering ibuprofen or ketorolac.



Acetylsalicylic Acid Aspirin (ASA)

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