Multiple vitamin overdose

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• Muscles and joints
  • Muscle pain
  • Muscle weakness
  • Joint pain
  • Bone pain
• Bladder and kidneys
  • Cloudy urine
  • Increase amount of urine output
  • Increase need to urinate
• Eyes, ears, nose, mouth, and throat
  • Dry, cracking lips (from chronic overdose)
  • Increased sensitivity of the eyes to light
  • Irritation of the eyes
• Skin and hair
  • Flushing from niacin (vitamin B3)
  • Dry cracking skin
  • Itching
  • Yellow-orange areas of skin
  • Sun-sensitivity (more likely to sunburn)
  • Hair loss (from long-term overdose)
• Gastrointestinal
  • Loss of appetite
  • Constipation (from iron or calcium)
  • Nausea and vomiting
  • Stomach pain
  • Weight loss (from long-term overdose)
  • Diarrhea
• Nervous system
  • Convulsions (seizures)
  • Headache
  • Mental changes
  • Mood changes
  • Irritability  
• Heart and blood
  • Electrical disturbances (arrhythmias) in the heart

Review Date: 02/28/2006
Reviewed By: Stephen C Acosta, MD, Department of Emergency Medicine, Portland VA Medical Center, Portland, OR. Review provided by VeriMed Healthcare Network.