Natrol Biotin Review: Everything You Need to Know

Natrol Biotin Review

This post was most recently updated on May 6th, 2023

If you have a hair loss problem, you may have thought of using Biotin supplements after reading about its many benefits. Biotin is quite popular among men and women. Some sell it as a single vitamin, others as a multivitamin. With so many options out there, you may not be sure which one is right. That’s why we are here with our Natrol Biotin review to give you details about Biotin’s features and benefits.

We at Reactive Hair will cover all you need to know about Natrol Biotin. From its benefits to customer reviews and alternatives for Natrol. Read on to discover whether or not this product is right for you to support healthy hair, skin, and nails.

Natrol Biotin review - Picture of Biotin Beauty 10000mcg

What is Natrol Biotin?

Natrol Biotin is a product line launched by Natrol, one of the most popular dietary supplement brands in America. In 1980, Natrol was first founded as a cosmetics company by Elliot Balbert. Over decades, Natrol developed into one of the well-known brands in the nutraceuticals category, providing vitamin, mineral, and multivitamin supplements for better health and wellness. They are committed to prioritizing quality above all else by carrying out stringent quality checks throughout the product manufacturing process, from raw material qualification screening to the final product.

In the Natrol Biotin line, Natrol offers up to 9 products that are crafted with different amounts of Biotin per serving. This Natrol Biotin review will be prioritized to specifically talk about Biotin Maximum Strength as one of their best sellers. In general, the Natrol Biotin line is designed to restore and maintain healthy hair, skin, and nail, as well as support the nervous system and body strength.

Here are all Natrol Biotin products with their benefits:

Promotes healthy hair, skin, and nailsBiotin Beauty Tablets
Biotin Extra Strength Fast Dissolve Tablets
Biotin Maximum Strength Tablets
Biotin Maximum Strength Fast Dissolve Tablets
Biotin Plus Lutein Tablets
Skin, Hair & Nails Advanced Beauty Capsules
Maintains better sleepSleep + Beauty Raspberry Gummies
Supports nervous and energy systemB-Complex Fast Dissolve Tablets
Supports blood sugar health and antioxidantCinnamon, Chromium & Biotin Tablets
As you can see, Nutrafol Biotin is not only designed for beauty, Biotin also helps maintain your metabolism and sleep, which is why Biotin is very important for your overall body health. All of their products are free of artificial flavors or sweeteners, GMOs, preservatives, and synthetic dyes. Now, let’s take a closer look at Natrol Biotin Maximum Strength Tablets.

Natrol Biotin Maximum Strength Tablets

Are you vegan and looking for biotin supplements? Look no further than Biotin Maximum Strength Tablets. With 10,000 mcg of Biotin, this supplement gives you extra support for your healthy hair, skin beauty, and strong nails. By taking one tablet daily, you have provided substantial daily nutrition for your body.

Natrol Biotin is perfect for those who have a deficiency of vitamin B7. But remember, you can’t claim it yourself, only a doctor can determine whether or not you are deficient in such vitamins. However, if you have brittle hair or hair loss, dry/rough/rash skin, and brittle/flexible nails, Natrol Biotin may help to solve such cases.

Besides 10,000 mcg of Biotin, Natrol Biotin is also enriched with Calcium (66 mg per serving). Natrol helps fulfill your daily calcium intake that your diet may not do. Calcium helps maintain the strength of your bones so they don’t become easily porous as you age.

Let’s move to the next section to learn the benefits of Natrol Biotin.

Benefits of Natrol Biotin Maximum Strength

With the right dose and regular use, Natrol Biotin will support your overall body health from within. If you have an allergic reaction to certain ingredients, don’t worry. Natrol contains no milk, egg, fish, crustacean shellfish, tree nuts, peanuts, wheat, soybeans, and yeast. Here are the benefits you get from Natrol Biotin:

  • Meets your daily intake of vitamin B7.
  • Promotes healthy hair growth, glowing skin, and strong nails from within.
  • Helps metabolism production to convert food into energy.

Natrol Biotin is safe and recommended for anyone. Although biotin is safe for pregnant and breastfeeding women and is recommended for maintaining wellness during pregnancy or lactating, since Natrol Biotin Maximum Strength has a very high dose of Biotin, you should consult your doctor before taking it.

To examine the benefits of Natrol Biotin Maximum Strength, in the next section we discuss the science behind Biotin and what real users say about the products.

What does Science Say?

Biotin, otherwise known as vitamin B7 or vitamin H, can be found in many foods like eggs, bananas, milk, and almonds. It is a water-soluble vitamin that acts as a cofactor for carboxylase enzymes in your metabolism processes. In recent years this vitamin has become popular because of its purported benefits to help grow stronger and healthier hair and nails. Biotin has an important role in protein synthesis, especially in the production of keratin. This, then, explains how biotin can contribute to your hair and nail growth.

A 2017 review of 18 cases regarding the efficacy of biotin supplements showed evidence of clinical improvement in hair and nails. From this case it is known that certain doses of biotin and a certain period of use can help hair growth in people who have:

  • Inherited deficiency of the enzymes biotinidase or holocarboxylase synthetase (10 out of 18),
  • Alopecia areata (8 out of 18), and
  • Uncombable hair syndrome (3 out of 18).

Moreover, three out of 18 cases showed better changes in patients with brittle nail syndrome. Even so, no studies are showing the efficacy of biotin supplements in normal, healthy people.

The study suggests:

  • People with alopecia areata and inherited enzyme deficiency should use biotin doses from 10,000 to 30,000 mcg/day.
  • Those who have uncombable hair syndrome and brittle nail syndrome only need a dose of 300 to 3,000 mcg/day.

Thus, Natrol Biotin may be effective for those of you who experience hair loss, including alopecia areata, and broken nails. Now, let’s see what customers think about Natrol Biotin Maximum Strength.

What do the Customers Think?

Currently, Natrol Biotin Maximum Strength Tablets has over 27,258 ratings with 4.6 stars on Amazon. These are big numbers. And as you can see, lots of people have been using it to meet their vitamin intake.

In this section, we provide several user experiences of taking Natrol Biotin.

Natrol Biotin review - 1

An adult male who experienced hair thinning on the top of his head. Natrol Biotin helps give him a fuller-looking head.

Natrol Biotin review - 2

A woman took Natrol Biotin to help to cater her brittle nails. It did give her faster-grow and long nails without breakage.

Natrol Biotin review - 3

A breastfeeding woman who took Natrol Biotin to cater to her hair loss problem due to hormone imbalance. As you can see, it did work to grow hair on her temple.

Natrol Biotin review - 4

A woman who had damaged, colored hair saw the results after the first bottle. Natrol Biotin made her hair healthier and her nails grow stronger.

Natrol Biotin review - 5

A woman with colored hair saw noticeable changes after taking Natrol for about a week. Hair is shinier and healthier. Her ends are less damaged.

Natrol Biotin review - 6

An adult female took Natrol Biotin twice daily. Her hair grows after taking it for 47 days.

Natrol Biotin review - 7

A woman originally bought Natrol to help grow her eyebrows, which did work. She also experienced better changes in her nails and hair growth.

Natrol Biotin review - 8

A woman took two tablets daily for the first seven days. After that, she only had one. Her hair grows thicker in the thinning areas.

Natrol Biotin does work for people with alopecia areata. Here are the reviews we found on Amazon.

Natrol Biotin review - 9
Natrol Biotin review - 10

Overall, Natrol Biotin works for many people with hair loss from different backgrounds and also helps repair brittle nails.

Now let’s take a look at the side effects you may experience since it has a high dose of Biotin.

Natrol Biotin Side Effects

Indeed, 10,000 mcg of biotin is a high dose for daily intake. Based on the Food and Nutrition Board of the Institute of Medicine, the adequate intake of biotin for adults (>19 years of age) is 30 mcg/day (see the table below).

Nonetheless, biotin is safe when taken in doses of up to 300,000 mcg daily.

Adequate Intake levels of biotin per the Food and Nutrition Board of the Institute of Medicine
Adequate Intake levels of biotin per the Food and Nutrition Board of the Institute of Medicine

However, 10,000 mcg of biotin might cause side effects for some people. We also found several side effect reports from reviews on Amazon. Let’s discuss the most known side effects of Natrol Biotin 10,000 mcg.

  • Some users reported breakout/ cystic acne/ skin rash, nausea, bloating, diarrhea, stomach cramps, and weight gain/ loss. If you are a bit skeptical about this, you can use the lower dose offered by Natrol Biotin (1,000 mcg and 5,000 mcg.)
  • Although biotin is safe for pregnant and breastfeeding women, it’s best to consult a doctor first before taking Natrol Biotin. They can take biotin in an adequate intake, which is 30 mcg/day and 35 mcg/day respectively.
  • Biotin can interfere with thyroid blood tests, but not the thyroid medication. You may stop taking biotin at least 2 days before doing the test.

Thus, it is better to talk to your doctor before taking any biotin supplements to avoid unwanted effects. If you are looking for an alternative to Natrol Biotin, let’s move to the next section.

Alternatives to Natrol Biotin

Tons of biotin supplements on the market!

In this section, we cover three biotin supplements that you may want to invest in there. These come from Nature’s Bounty, Nature Made, and Vitafusion. Now let’s take a closer look at them.

Nature’s Bounty

Nature's Bounty Biotin 10,000 mcg

This is the flagship brand of The Bountiful Company which brings you the best gummy supplements. Nature’s Bounty offers a wide array of supplements, including Biotin 10,000 mcg. It is formulated with no artificial sweeteners or flavor, sugar, milk, gluten, fish, yeast, and starch. Taking 1 gummy daily can help your hair, skin, and nails get the best nutrition they should. It is also easy to swallow since it comes in gummy form.

Check our review on Nature’s Bounty for more details.

Nature Made

Nature Made Maximum Strength Biotin 5,000 mcg

Founded in 1971, Nature Made has made the best supplements with high-quality ingredients backed up by 35 years of research. All products are free of gluten, dyes, artificial sweeteners or flavors, and high fructose corn syrup. Maximum Strength Biotin 5000 mcg comes in soft gels, which are easy to swallow rather than tablets. The dose is lower than Natrol Biotin since you only need to take 1 gummy daily. Thus, it may be the best option for you if you’re looking for a lower dose.


Vitafusion Extra Strength Biotin 5,000 mcg

Since taking its roots in 1995, Vitafusion has become a pioneer in the dietary supplement industry. Their products are free of artificial sweeteners, high-fructose corn syrup, dairy, synthetic dyes, and gluten. Vitafusion Extra Strength Biotin Supplement contains 5,000 mcg of biotin and is infused with a blueberry extract that gives you amazing flavor. As the instruction suggests, taking 2 gummies daily, means you’ll get 10,000 mcg of biotin intake.

Read our review of Vitafusion for more details.

Comparison of the Alternatives

Natrol Biotin Maximum Strength Tablets 10,000 mcgNature’s Bounty Biotin 10,000 mcgNature Made Maximum Strength Biotin 5,000 mcgVitafusion Extra Strength Biotin 5,000 mcg
Current Price: $20.72 for 200 countCurrent Price: $4.99 for 120 countCurrent Price: $18.67 for 120 countCurrent Price: $12.49 for 100 count
1 tablet daily1 gummy daily1 gummy daily2 gummies daily
4.6 out of 5 stars from 27,258+ ratings on Amazon4.7 out of 5 stars from 82,410+ ratings on Amazon4.7 out of 5 stars from 5,590+ ratings on Amazon4.7 out of 5 stars from 18,130 ratings on Amazon

Nature’s Bounty gives the lowest price option among them. The gummies will last for 4 months, just like Nature Made. Nature’s Bounty also has the most ratings on Amazon with Natrol Biotin in second place. Even though Vitafusion is more budget-friendly than Nature Made and Natrol, the gummies only last for less than 2 months, while Natrol is up to 6 months.


To sum up, Natrol Biotin Maximum Strength Tablets are effective in promoting the beauty of your hair, skin, and nails. Many users prove that Natrol Biotin 10,000 mcg helps to grow healthy hair and nails, including those who have alopecia areata. So, Natrol Biotin is legit!

It is worth buying to support your beauty from the inside. If you are a bit skeptical about it due to the high dose, you can start with Natrol Biotin 1,000 mcg or 5,000 mcg, or pick from one of the alternatives to Natrol Biotin.

Hope this Natrol Biotin review was useful and gave you a lot of information about the product. Leave us a comment with any thoughts you may have.

Fast FAQs

Is 10000 mcg of biotin too much?

No. You can take up to 300,000 mcg per day for up to 6 months. But, it might cause side effects for some people. Make sure to consider this one before taking a high dose of biotin supplements.

How much biotin should you have a day for hair growth?

The number may vary depending on your reaction to biotin itself. The recommended biotin dose to help grow your hair is ranging from 1,000 mcg to 5,000 mcg. For severe cases like alopecia areata, it may start from 10,000 mcg.

Is biotin worth taking?

Yes. Besides promoting healthy hair, skin, and nails, biotin plays an important role in your metabolism production. It is why you should meet an adequate intake of biotin each day.

Is biotin 5000 or 10000 better?

Both are great since the minimal dose for hair growth is 2,000 mcg. However, biotin will work better if you have a deficiency in such vitamins.

How long before biotin works on hair?

About 3-4 months depending on the dose you take and how badly damaged your hair and nails are.

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