Selenium Side Effects

Applies to selenium: oral capsule, oral tablet, oral tablet extended release

As well as its needed effects, selenium may cause unwanted side effects that require medical attention.

If any of the following symptoms of overdose occur while taking selenium, get emergency help immediately:

• Diarrhea
• fingernail weakening
• garlic odor of breath and sweat
• hair loss
• irritability
• itching of skin
• nausea and vomiting
• unusual tiredness and weakness

It is possible that some side effects of selenium may not have been reported. These can be reported to the FDA here. Always consult a healthcare professional for medical advice.

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