FDA Alert About High Biotin Levels – Not A Concern For Nutrafol Users

how much biotin is too much?

The FDA has released a warning to the medical community and the public that a high biotin level can skew the results of some medical tests. According to the statement, the FDA has seen an increase in the number of reported events of biotin interference with lab tests.

As biotin is a common ingredient in hair and nail supplements including Nutrafol, we wish to assure the public that the amount of biotin in Nutrafol is safe. The biotin level in Nutrafol is not only significantly lower than the level in question by the FDA (about 100 times lower), but it is also lower than the biotin level in many other hair supplements.

• The dose currently in question by the FDA is 300 mg per day (300,000 mcg).
• Nutrafol includes 3 mg of biotin (3,000 mcg).
• Many hair products include 5 mg (5,000 mcg) of biotin, which puts Nutrafol on the lower end of the spectrum.

The biotin level in Nutrafol is not only significantly lower than the biotin level in question by the FDA, but it is also lower than the biotin level in many other hair supplements.

Biotin is a naturally occurring vitamin in the body (vitamin H) and biotin supplements do not represent a health hazard. Rather it is that the presence of extra biotin from supplements can prevent immune based lab tests from functioning properly because they are designed to interact with biotin at the levels normally present in the body. The concern of the FDA is not that biotin itself is harmful, but that high levels of biotin can prevent the detection of other health problems that a patient is being tested for.

To avoid potential incorrect results when taking lab tests, Nutrafol recommends following the dosing indicated on the supplement package and discontinuing supplements 24 hours prior to any blood test. Biotin has a half-life of approximately two hours and is largely cleared from the body in 10 hours. Stopping supplements for a full 24 hours before a lab test, assures that biotin is fully cleared from the body so it won’t interfere with the test result.

What Are The Side Effects Of Biotin Hair Supplements?

Biotin side effects

Biotin is one of the essential vitamins you need for healthy hair – but are there any side effects of biotin that could mess with your health? In this article, we’ll go through everything you need to know.

Biotin, also known as vitamin B7, is a water soluble vitamin that helps to create enzymes in the body. It breaks down the protein in the food we eat and turns it into different amino acids; some of which form keratin. Keratin is the main building block of hair, meaning that biotin is necessary for hair to form. However, a lot of foods contain biotin and our bodies can also create it, so it’s pretty unusual to have a biotin deficiency.

Biotin has been a go-to supplement for general beauty ever since it was discovered to help brittle nails become stronger. However, the research on exactly how and why biotin is so good for our beauty is insufficient.

Mainly, it has been proven to have benefits for our hair, skin, and nails through observations and single studies, rather than repeated, double-blind clinical trials. But as long as the effects are visible and not harmful, people will continue to buy supplements. So are there any biotin side effects?

Possible Biotin Side Effects

According to dermatologist Dr. Susan Stuart, possible signs of a biotin overdose include slower release of insulin, skin rashes, lower vitamin C and B6 levels, and high blood sugar levels.

Some other documented, although not common, side effects of biotin are nausea, cramping, and diarrhea. Some say taking the supplement with food reduces the risk of side effects.


Some people are allergic to biotin and should clearly not supplement with it. It’s also important to be careful and ask your doctor first if you suffer from a kidney disease, or are a smoker, or if you’ve had stomach surgery. That precaution naturally applies for women who are pregnant or breastfeeding, or anyone taking medications.

Additionally, excess biotin in the blood from supplements can cause some, but not all, lab test results to be either falsely increased or decreased, causing healthcare practitioners to misdiagnose and mistreat their patients. Discontinue supplementing biotin 3 to 5 days prior to having blood work done to ensure test result accuracy.

Benefits of Supplements

As biotin is water soluble, any excessive amounts of the vitamin are flushed out of the body, making an overdose unlikely for an average person with no health issues. There are also combined supplements you can take that are specialized for what you want to achieve.

If you’re not looking to take pure biotin for the vitamin’s own sake, take a special hair or nail supplement that contains all the ingredients that will work together to achieve your goal. Biotin itself is not enough to get great hair. Hair health depends on many different factors, such as vitamins, minerals, exercise, hydration, sleep, stress, or genetics.

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