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There are a variety of symptoms that can occur if one has zinc toxicity, although this condition is not very common.
Nausea, vomiting, lethargy, and fatigue have been reported with Zinc toxicity.
Also problems with nerve function can occur, which could produce numbness in the feet, for example.
Other symptoms can include seizures, rash, and low blood pressure. Do you take supplements containing zinc, or do you use dentures?