If you experience any of the following serious side effects, stop taking tramadol and seek emergency medical attention or contact your doctor immediately:

• an allergic reaction (difficulty breathing; closing of your throat; swelling of your lips, tongue, or face; or hives);
• seizures.

Less serious side effects may be more likely to occur. Continue to take tramadol and talk to your doctor if you experience

• dizziness, drowsiness, or headache;
• nervousness, tremor, or anxiety;
• nausea, vomiting, constipation, or diarrhea;
• itching, dry mouth, or sweating.

Tramadol is habit forming. Physical or psychological dependence can occur, and withdrawal effects are possible if the medication is stopped suddenly after prolonged or high-dose treatment.

Side effects other than those listed here may also occur. Talk to your doctor about any side effect that seems unusual or that is especially bothersome.

Notify your doctor if you develop any of these serious effects while taking Tramadol: chest pain, rapid heart rate, skin rash or itching, mental confusion, disorientation, seizures, tingling of the hands or feet, trouble breathing. In the unlikely event you have an allergic reaction to Tramadol, seek immediate medical attention. Symptoms of an allergic reaction include: rash, itching, swelling, dizziness, breathing trouble. If you notice other effects not listed above, contact your doctor or pharmacist.

If overdose is suspected, contact your local poison control center or emergency room immediately. Symptoms of overdose may include cold and clammy skin, low body temperature, slowed breathing, slowed heartbeat, drowsiness, dizziness, lightheadedness, deep sleep, loss of consciousness, or seizures.