To evaluate analgesic onset, efficacy, and safety of 1000 mg acetaminophen administered as two Test Acetaminophen 500 mg tablets (Test ACM) compared with 1000 mg acetaminophen administered as two commercial acetaminophen 500 mg caplets (ACM) and 400 mg ibuprofen administered as two commercial ibuprofen 200 mg liquid-filled capsules (IBU) in the dental pain model following third-molar extractions.
This is a single-dose, randomized, double-blind, placebo- and active- controlled, parallel-group study to evaluate the analgesic onset, efficacy, and safety profile of Test ACM 1000 mg compared with two commercial products over a four-hour period after third-molar extractions. Subjects will undergo dental extraction of three or four third molars.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
TREATMENT
Masking
QUADRUPLE
Enrollment
664
single dose of 2 Test acetaminophen 500 mg tablets
single dose of 2 acetaminophen 500 mg caplets
Single dose of 2 ibuprofen 200 mg Liquid-filled Capsules
Jean Brown Research
Salt Lake City, Utah, United States
Time to Confirmed Perceptible Pain Relief
Minutes until confirmed perceptible pain relief is achieved. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief.
Time frame: within 4 hours
Time to Meaningful Pain Relief
Minutes until meaningful pain relief is achieved. Stopwatch is started after the participant takes the study medication. The participants are instructed to stop the stopwatch when the relief from the starting pain is meaningful to them.
Time frame: Within 4 hours
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 30 Minutes
Percentage of participants with confirmed perceptible relief by 30 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 30 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 29 Minutes
Percentage of participants with confirmed perceptible relief by 29 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
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2 placebo caplets
Time frame: by 29 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 28 Minutes
Percentage of participants with confirmed perceptible relief by 28 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 28 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 27 Minutes
Percentage of participants with confirmed perceptible relief by 27 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 27 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 26 Minutes
Percentage of participants with confirmed perceptible relief by 26 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 26 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 25 Minutes
Percentage of participants with confirmed perceptible relief by 25 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 25 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 24 Minutes
Percentage of participants with confirmed perceptible relief by 24 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 24 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 23 Minutes
Percentage of participants with confirmed perceptible relief by 23 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 23 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 22 Minutes
Percentage of participants with confirmed perceptible relief by 22 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 22 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 21 Minutes
Percentage of participants with confirmed perceptible relief by 21 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 21 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 20 Minutes
Percentage of participants with confirmed perceptible relief by 20 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 20 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 19 Minutes
Percentage of participants with confirmed perceptible relief by 19 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 19 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 18 Minutes
Percentage of participants with confirmed perceptible relief by 18 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 18 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 17 Minutes
Percentage of participants with confirmed perceptible relief by 17 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 17 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 16 Minutes
Percentage of participants with confirmed perceptible relief by 16 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 16 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 15 Minutes
Percentage of participants with confirmed perceptible relief by 15 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 15 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 14 Minutes
Percentage of participants with confirmed perceptible relief by 14 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 14 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 13 Minutes
Percentage of participants with confirmed perceptible relief by 13 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 13 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 12 Minutes
Percentage of participants with confirmed perceptible relief by 12 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 12 minutes
Percentage of Participants With Confirmed Perceptible Relief From 30 Minutes to Successively Earlier Minutes in One-minute Increments - 11 Minutes
Percentage of participants with confirmed perceptible relief by 11 minutes. Stopwatch is started after the participant takes the study medication. The participant is instructed to stop the stopwatch when they first begin to feel any pain relief. The perceptible pain relief is confirmed if the participant also stopped the second stopwatch indicating meaningful pain relief. Test acetaminophen 1000 mg and placebo were compared on the percentage of subjects with confirmed perceptible relief starting at 30 minutes and testing successively earlier minutes (29, 28, etc) until the difference was no longer statistically significant. The earliest significant time was identified.
Time frame: by 11 minutes