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Gastrointestinal
- Loss of appetite
- Vomiting
- Nausea
- Stomach pain
- Diarrhea
Heart and blood
- Irregular or slow heartbeat
- Low blood pressure
- Weakness
Nervous system
- Drowsiness
- Confusion
- Depression
- Headache
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Fainting
-
Lethargy
- Disorientation
- Dizziness
- Death
Eyes, ears, nose, mouth, and throat
Skin
Note: Depression, loss of appetite, and halos are usually only seen in chronic overdose cases.
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