Tag: Biotin side effects

While true biotin deficiency is rare, at least a third of pregnant women develop a marginal deficiency despite normal intake [1.7.4]. Understanding **how long does it take for your body to get used to biotin** depends on your health, dosage, and goals.

The U.S. FDA has issued warnings that biotin can interfere with lab tests, including those for heart attacks [1.2.5]. This guide explains when not to take biotin supplements to avoid risks and ensure it's the right choice for you.

In 2017, the FDA issued a safety communication alerting the public and healthcare professionals that high-dose biotin can significantly interfere with certain lab tests, leading to incorrect results. This major risk is often unknown to consumers taking supplements for hair, skin, and nail health, highlighting the importance of understanding all potential side effects of taking biotin.

As a water-soluble vitamin, biotin is generally considered safe, with any excess typically flushed from the body through urine. However, taking high-dose supplements can, in rare cases, trigger mild digestive upset, leading many to ask: **Does biotin cause nausea?**

The adequate intake (AI) of biotin for adults is just 30 micrograms (mcg) per day, yet supplements commonly contain 5,000 mcg or more. Therefore, the question, **is 5000 mcg of biotin too much?**, is not about toxicity but potential lab test interference and whether such a high dose is necessary.

While true biotin deficiency is rare, the use of high-dose biotin supplements has increased dramatically in recent years. For those taking supplements for hair, skin, and nails, it is important to know if you're getting too much biotin and the potential consequences of over-supplementation.

The U.S. Food and Drug Administration (FDA) has issued warnings that biotin can significantly interfere with certain lab tests, including those for cardiac health [1.4.2, 1.4.5]. While generally considered safe, it's important to understand what are the negative side effects of biotin before starting supplementation.

A 2018 survey found that 7.7% of outpatients reported taking biotin supplements [1.7.2]. So, what is a negative side effect of biotin that these users should know? The most critical risk is its potential to cause clinically significant incorrect lab test results [1.4.1].