How long After taking lortab, can I take percocet?

Every 4 hours. You can alternate every 4 hours. However, too much Tylenol (acetaminophen) can be very bad for your liver. Always ask your health care professional and take these medications on a regular schedule as directed by your doctor.
Narcotic Effects. I understand your desire to have relief from pain Both Lortab and Percocet are narcotics with many side effects and habit forming. Do not use Percocet when you have used Lortab as it may affect your breathing. See Orthopedic Physician for Diagnosis of back pain, have MRI, discuss Medication benefits, side effects; treatment. See Psychiatrist for Therapy for stresses and Pain management program.