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.
For moderate pain, one or two tablets of Tylenol or Extra Strength Tylenol may be taken every three to four hours or Ibuprofen, (Motrin or Advil) two-four 200 mg tablets may be taken every 6-8 hours â â unless otherwise directed by your doctor.