Symptoms of overdose can be similar to the medication’s side effects, but are usually more severe. Overdose of headache medications can lead to toxicity and even death. Patients exhibiting any of these symptoms should contact their physicians immediately:

• Severe headache
• Seizures
• Nausea
• High fever
• Gastrointestinal discomfort (e.g., stomach pain, diarrhea, vomiting)
• Delirium
• Incoherence and confusion
• Drowsiness
• Blurred vision
• Decreased urine output
• Swelling of the feet, ankles and legs
• Irregular heartbeat
• Jaundice (yellow discoloration of the eyes and skin)
• Rapid breathing
• Ringing in the ears (tinnitus)
• Skin eruptions
• Sweating
• Bluish discoloration of the skin (cyanosis)
• Unsteadiness throughout the body