Can Oral Zinc Supplements Cause Loss of Smell? Insights and Safety Guidelines
Explore whether oral zinc supplements can cause loss of smell. Learn about the side effects associated with oral zinc, particularly gastrointestinal issues and taste changes, and understand the risks of exceeding recommended dosages.
Can oral zinc supplementation cause loss of smell?
Oral zinc supplementation is generally safe, but it is important to be cautious. The most well-documented cases of smell loss related to zinc have been associated with zinc nasal sprays, not oral supplementation1. Using zinc nasal sprays has led to a permanent loss of smell in some individuals.
When taking zinc orally, the primary side effects often include gastrointestinal issues and changes in taste, but there is no strong evidence directly linking oral zinc supplements to a loss of smell1.
To avoid potential side effects, it is recommended not to exceed the daily limit of 40 mg of zinc for adults unless advised by a healthcare provider1.
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