For a sudden fever and weakness, rest and hydration are essential. You can take over-the-counter Paracetamol (Acetaminophen) 500mg or Ibuprofen 400mg to reduce fever and ease body aches. Please follow the package dosage instructions carefully and do not exceed the daily limit. If you have any underlying health conditions, consult a pharmacist first. Monitor your symptoms closely. If your fever remains high (above 103 degrees F/39.4 degrees C), lasts more than three days, or if you develop severe symptoms like shortness of breath, severe headache, or confusion, please seek immediate medical attention for a proper evaluation.
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