Because Percocet is a narcotic, it's a good idea to know the precautions and warnings with Percocet before taking it. For example, the drug can cause low blood pressure and constipation. You shouldn't take it if you have severe asthma or are allergic to acetaminophen, narcotics, or opiates. To help ensure your safety, talk to your doctor about the Percocet warnings and precautions that apply to you.
Any allergies, including allergies to foods, dyes, or preservatives.
Also, let your healthcare provider know if you are:
Pregnant or thinking of becoming pregnant
Breastfeeding.
Make sure to tell your healthcare provider about any other medications you are taking, including prescription and non-prescription medicines, vitamins, and herbal supplements.