Duplication or reproduction of existing classified information is not derivative classification. Persons who apply classification markings derived from source material or as directed by a classification guide need not possess original classification authority. (b) Responsibility.
According to my doctor, 4 hours. You can switch them up. Take acetaminophen, (Tylenol), then wait 4 hours and take Ibuprofen, wait another 4 hours and take acetaminophen and so on. :) 15 people found this useful.
If you. need pain relief between doses, you may take 2 Advil (ibuprofen). Do not exceed 3,000. mg of Tylenol (acetaminophen) or 2,400mg of Advil (ibuprofen) in a 24 hour period. Begin taking pain medication approximately 2-3 hours after surgery. Avoid strenuous activity for 48 hours as this may cause bleeding.