Zinc upset stomach happens when taking high-dose zinc supplements irritates the digestive tract, causing nausea, vomiting, or diarrhea. This typically occurs with doses exceeding 40 mg per day, though sensitivity varies.
Zinc is an essential mineral that supports immune function and wound healing. The body absorbs it in the small intestine, but excessive amounts can irritate the stomach lining. The National Institutes of Health (NIH) notes that zinc supplements are generally safe at recommended doses (8-11 mg/day for adults), but higher amounts can cause gastrointestinal distress.
Zinc upset stomach most often results from:
Mild cases may cause slight nausea, while severe cases can lead to vomiting, diarrhea, or abdominal cramps. In extreme cases, zinc toxicity can occur, causing symptoms like headaches, fatigue, and even copper deficiency due to zinc interfering with copper absorption.
To avoid zinc upset stomach:
If symptoms occur, drinking water and eating bland foods like toast or bananas can help. Severe reactions warrant medical attention.