TRAMADOL:- Tramadol is a synthetic opioid analgesic chemical similar to natural opioidso. It is used to prevent severe pain for example, a heart attack, injury, surgery, or cancer.
quote Effect of tramadol Wears off after about 4hours, but the drug can be given in a slow-release (long acting from) which give relief for up to 12 hours.
SPECIAL PRECAUTIONS:- 1) you have had a head injury. 2) you have thyroid disease. 3) you have a lung disorder such as asthma or bronchitis. 
EFFECT OF TRAMADOL.
1) Pregnancy- safety not established Discuss with your doctor.
2) Breast-feeding- The drug passes into the breast milk and may make the body drowsy discuss with your doctor.
3) Infants and children- not recommended under 13 years.
4) Driving and hazardous work- Avoid Tramadol can cause drowsiness.
Stay safety don't drink don't do drug.
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