... in mg? My Dr said she had to cut me back to meet the CDC narcotics limit of 90 (mg or ? Not sure what they call it) per day I take 4 of 7.5mg Percocet per day and a 37.5 mcg fentanyl patch every 48 hours. How is the patch counted toward the limit per day since it is in vivo delivery of 37.5mcg/hr. This is for my chronic pain.