What are the side effects of selenium yeast tablets?
Dec 10, 2025
Source: Cainiu Health
Dr. Huang Yuhong
Introduction
Under normal circumstances, selenium yeast tablets are used as a medication to supplement selenium. Possible side effects after taking the drug include gastrointestinal discomfort, hair abnormalities, nail deformation, dizziness, fatigue, and increased burden on liver and kidney function. When using this medication, it is important to be aware of its contraindications and precautions, and to strictly follow medical instructions to ensure safe and effective use.
Under normal circumstances, selenium yeast tablets are used as a medication to supplement selenium. Possible side effects after taking the drug may include gastrointestinal discomfort, hair abnormalities, nail deformities, dizziness and fatigue, and increased burden on liver and kidney function. A detailed analysis is as follows:
1. Gastrointestinal discomfort: Some individuals may experience gastrointestinal reactions such as nausea, bloating, diarrhea, or constipation after taking the medication. These symptoms are usually caused by irritation of the gastrointestinal mucosa by the drug and often resolve after reducing the dose or discontinuing the medication. Discomfort may be more pronounced when taken on an empty stomach.
2. Hair abnormalities: Excessive intake may lead to hair loss, dryness, and split ends. This occurs because accumulated selenium in the body affects the normal nutrient supply to hair follicles. If such symptoms occur, the dosage should be adjusted promptly.
3. Nail deformities: Long-term or excessive use may cause nails to become brittle, thin, or even cracked. This is related to selenium's effect on the nail keratin layer. Symptoms typically improve gradually after stopping the medication.
4. Dizziness and fatigue: A minority of people may experience dizziness, limb weakness, or lethargy. This could result from selenium disrupting the balance of other trace elements in the body and affecting normal metabolism. Symptoms usually subside with rest.
5. Increased liver and kidney burden: Selenium yeast tablets are metabolized through the liver and kidneys. Long-term excessive use increases metabolic stress on these organs. Individuals with pre-existing liver or kidney dysfunction are at higher risk of worsening organ burden and must strictly control their dosage.
When using this medication, it is also important to pay attention to contraindications and precautions, strictly follow medical advice, and ensure both safety and effectiveness of treatment.
