I am asking this question because my senior in school used tramadol (i dnt know if he use overdose) and he died. I have also heard of another death caused by usage of tramadol. So doctors,pharmacists and any other health workers in the house, educate me on the usage and effect of tramadol.

Google is your friend my friend.

What is tramadol?
Tramadol is a narcotic-like pain reliever.
Tramadol is used to treat moderate to severe pain .
The extended-release form of tramadol is for around-the-clock treatment of pain. This form of tramadol is not for use on an as-needed basis for pain.
Tramadol may also be used for purposes not listed in this medication guide.

You should not take tramadol if you have used alcohol, sedatives, tranquilizers, or narcotic medications within the past few hours.
Tramadol can slow or stop your breathing, especially when you start using this medicine or whenever your dose is changed. Never take tramadol in larger amounts, or for longer than prescribed. Do not crush, break, or open an extended-release pill. Swallow it whole to avoid exposure to a potentially fatal dose

Seizures (convulsions) have occurred in some people taking this medicine. Tramadol may be more likely to cause a seizure if you have a history of seizures or head injury, a metabolic disorder, or if you are taking certain medicines such as antidepressants, muscle relaxers, narcotic, or medicine for nausea and vomiting

Tramadol may be habit-forming, even at regular doses. Take this medicine exactly as prescribed by your doctor. Never share the medicine with another person. MISUSE OF NARCOTIC PAIN MEDICATION CAN CAUSE ADDICTION, OVERDOSE, OR DEATH, especially in a child or other person using the medicine without a prescription.