Sounds like you have a MS Contin tablet there. It is a time released medication meant to establish a consistant blood level of morphine over 12 hours for pain management. There is no ceiling to how much morphine anyone can take. Of course, you can't take 100 mg of morphine right off the bat and expect to survive that, but morphine can be increased gradually without any ceiling in mind. (I once had a patient on 1000mg of morphine a day and she was still doing her housework)
Vicodan and percocet are different. They have narcotics in them (vicodan has hydrocodone, and percocet contains oxycodone) Both of these medications are also mixed with tylenol. Tylenol has a ceiling because it can cause permanent liver damage and death if overdosed.
If the MS Contin is not yours, DO NOT TAKE IT! If your body is narcotic naive you run the risk of having problems (including death) from it and that medicine will stay in your system for 12 hours.
Source(s):
Hospice RN