Guide
Biotin: the best products compared (2026)
Last updated: 31 July 2026
Written by
Health Tested Editorial Team
Biotin, also known as vitamin H or vitamin B7, is often called 'the beauty vitamin'. And with good reason: it's particularly important for healthy, beautiful skin, hair and nails.
But biotin can do far more for your health. Among other things, it's used to support mental health and the immune system, and even to help people with diabetes.
If you're thinking about taking a supplement, here's our comparison of the best biotin products.
There are countless biotin products on the market, but not all of them are effective.
Biotin: fuel for cell growth
Biotin is a water-soluble vitamin that your body can store only in small amounts. As a coenzyme, it helps your body carry out certain reactions properly, including those involved in energy, fat and protein metabolism. It's also involved in cell growth and in DNA and protein synthesis.
As a result, it has a major influence on many areas of the body and promotes the growth of blood and nerve cells, sebaceous glands, skin, hair and nails.
No wonder this B vitamin is seen as an all-rounder for beauty.
Biotin: the beauty vitamin
Biotin's best-known benefit is probably its contribution to beauty: it plays a key part in keeping your skin supple and well hydrated, and it makes for strong, healthy hair.
The European Food Safety Authority (EFSA) also confirms the positive effect of biotin on skin and hair growth.Biotin is said to influence the keratinisation of skin, hair and nails, which is why it's used successfully for brittle nails, hair growth problems and hair loss.
Biotin can promote healthy skin and hair and support the nervous system. It contributes to skin regeneration, supports metabolic processes and helps your body carry out key functions such as energy production and cell division.
The key benefits at a glance
Taking biotin regularly can offer many health benefits. These are the most important:
- a stronger immune system
- healthy skin, strong hair and strong nails
- healthy nervous system function
- maintenance of normal mucous membranes
- improved energy metabolism
- better gut health
- a stronger metabolism
- improved blood sugar control and diabetes symptoms
Benefits for mental health
The right biotin supplement may help with:
- anxiety and depression
- mood and stress management
- mental resilience
Healthy biotin levels are crucial: how to spot the first signs of deficiency
Signs of biotin deficiency
Because biotin is so important for healthy skin and hair, a deficiency often shows up there first. But various other symptoms can also occur:
- hair loss
- dry, scaly skin
- eczema
- brittle nails
- changes in the skin and mucous membranes
- exhaustion and tiredness
- nausea
- muscle pain or cramps
- weakness and psychiatric symptoms such as depression
Who needs more biotin?
Biotin deficiency is more common than you might think, especially in certain risk groups. Pregnant women top the list, as the body breaks biotin down faster than usual during pregnancy and breastfeeding. Estimates suggest up to 50% of them are affected.
People with alcohol dependence or gut problems, as well as regular smokers, are also at greater risk of deficiency. Certain medicines, such as antibiotics and epilepsy medicines, can also increase how much biotin you need.Eating a lot of raw eggs (as some bodybuilders do) or taking alpha-lipoic acid supplements (an antioxidant used, for example, to treat diabetic neuropathy) can also interfere with biotin absorption.
If you belong to one of these groups, you should ask your doctor to check your biotin levels.
A biotin deficiency can have considerable effects, particularly on the health of your skin, hair and nails and on your nervous system.
Not all biotin is the same: there are big differences between supplements
What to avoid when buying biotin
If you decide to take a biotin supplement, avoid the following:
- low bioavailability
- capsule shells made of gelatine
- fillers and anti-caking agents
- allergens such as lactose, gluten and soya, if you have an allergy
- unnecessary additives
- sugar, alcohol or flavourings
Also be wary of suspiciously low prices.
There are several factors to consider when choosing the right biotin supplement.
Dosage forms: how can you take biotin?
Biotin comes in various forms, so there's something to suit everyone, whatever your preferences.
Some popular forms of biotin
- tablets
- capsules
- biotin in liposomal form
- more rarely, effervescent tablets and lozenges
The choice mainly depends on your individual preferences and needs. However, bioavailability can differ, and the liposomal form has proved the most effective.
Capsules
Pros
Easy to take: just swallow
Practical on the go and when travelling
Easy to dose (each capsule contains the same amount)
No unpleasant taste or smell
Can be combined with other active ingredients
Cons
Stomach acid can affect absorption of the active ingredient
Digestion can partly break down the active ingredient
Bioavailability of the active ingredient can vary
The capsule shell may contain gelatine
Often contain additives
Unsuitable if you have difficulty swallowing
High doses may require several capsules
Drops
Pros
Easy to dose
Fast absorption of the active ingredient (via the mucous membranes)
Good for people with swallowing difficulties or stomach problems
Versatile: can be mixed into drinks or food
Cons
The drops may taste unpleasant
Exact dosing can be difficult, as the number of drops varies
The liquid can leak or spill
Short shelf life
Liposomal form
Pros
Highest bioavailability of the active ingredient
Better absorption by bypassing stomach acid
A lower dose is needed for the same effect
Can mask the taste of the active ingredient
No additives
Cons
May cost more because manufacturing is more complex
Availability and choice may be limited
Making liposomes can be difficult and requires specialist technology
Smaller choice, as not all manufacturers can use the method
Because they're tiny, just nanometres across, and rich in fat, liposomes protect the active ingredient inside them from being broken down by enzymes in saliva and by stomach acid. They deliver it directly into the bloodstream, which significantly improves absorption.
Liposomal biotin: high bioavailability at a lower dose
Liposomal biotin is a more advanced version of ordinary biotin.
It allows better absorption and bioavailability.
In liposomal supplements, the active ingredient is enclosed in a protective layer of fat with the same structure as your own cell membranes. This layer fuses with the cell membrane as soon as it comes into contact with it, and the active ingredients are carried directly into the cell, without going through the complicated absorption mechanisms of the digestive system.
As a result, biotin's bioavailability is up to 64 times higher.At the same time, the liposomal formulation is better tolerated and causes fewer side effects in the digestive tract, especially for people with a sensitive stomach.
A simple model of a liposome, with a fatty layer on the outside and a watery chamber inside. Liposomes are an innovative technology for the targeted, efficient release of active ingredients. That's why they've earned a firm place in medicine and cosmetics, where they have many uses.
More benefits: longer-lasting effect and better tolerability
Conventional biotin is absorbed quickly, peaks in the blood within a few hours and is then broken down again just as fast.
Thanks to liposome technology, liposomal biotin can stay active in the bloodstream for longer, providing a more sustained supply, which is ideal if you get only small amounts of biotin from your diet.
On top of that, liposomal biotin is particularly well tolerated. While conventional supplements can cause mild stomach upsets in some people, the protective lipid coating of liposomal products significantly reduces the risk of such side effects.
Top 3: the best biotin products in 2026
There are now countless biotin products on the market, so we assessed them against the following criteria to find the best:
How is the biotin product formulated?
Are there any study or test results?
How high is the dose of biotin?
Does it contain any allergens?
How good is the value for money?
Is there anything special about the formulation or manufacturing?
product review
TESTED
our quality criteria
MELINAVA Liposomal Biotin
by MELINAVA
Pros
- Ideal dose: 500 µg (0.5 mg) in liposomal form
- Highest bioavailability thanks to liposome technology (up to 64 times better absorption by the body)
- Protection from stomach acid thanks to the liposomal coating
- Longer-lasting effect
- Fewer side effects
- Suitable for people with a sensitive stomach
- Free from soya, gluten and lactose
- Gelatine-free capsule
- No fillers
- Free from impurities
- Made in Europe (France)
- Supplied in a high-quality glass bottle that you can reuse at home, e.g. for spices
Cons
- Only available online
- Often sold out
- Only available as capsules
Verdict
Melinava Liposomal Biotin achieved the highest overall score and impressed us with its many advantages. The 500 µg of biotin it contains already has high bioavailability, which the liposomal form increases even further.
This means you can take less and still get a stronger effect.
The effect also lasts 6–8 hours, compared with just 2–3 hours for ordinary biotin.
The liposome technology also makes for more satisfied customers, as it is gentle on the stomach and so lowers the risk of side effects.
Melinava focuses on high effectiveness and uses only 100% pure additives of the highest quality, which shows in the positive customer reviews.
The satisfaction of users and the many positive reviews of Melinava Liposomal Biotin speak for themselves.
Melinava has already produced very good results for complaints such as a weakened immune system, skin irritation and hair loss, as well as poor concentration and memory. Users also report a positive effect on their mood and a reduction in feelings of anxiety.
With Melinava Liposomal Biotin, you only need to take one capsule a day. A pack contains 30 capsules.
Melinava takes first place in our test (as of January 2026). The manufacturer takes product tolerability very seriously, which is why the supplement is completely free from unwanted additives.
A one-month course of Melinava costs 349 kr (with discounts when you buy 2 or 3 packs). You can find more information on the manufacturer's website.
Vanosan Biotin
by VANOSAN
Pros
- Free from soya and gluten
- Vegetarian
- Laboratory-tested
- Few additives
- Made in Germany
Cons
- Dose possibly too high
- No protection from stomach acid
- The tablets are hard to break in half
- Contains preservatives
Verdict
Vanosan Biotin provides a generous dose, with 10,000 µg of biotin per day. The biotin it contains is in a form that is easily absorbed.
Users are positive about Vanosan Biotin. For many users, taking it over a longer period reduces their susceptibility to infections and so has a positive effect on the immune system.
Some customers, however, find the dose too high and say the tablets are very hard to break in half.
Vanosan Biotin contains lactose and is therefore not suitable for vegans.
Take one tablet a day with a meal. A pack contains 30 tablets.
Biotin from vitamaze
by VITAMAZE
Pros
- Affordable
- Combined with zinc and selenium
- Vegan
- Tested for contaminants
- Laboratory-tested
- Few additives
- Made in Germany
Cons
- Zinc dose possibly too high, which can cause side effects (e.g. in the digestive tract)
- Zinc citrate is absorbed slightly less well than zinc picolinate
- Requires 2 tablets a day
- Some customers complain of little or no effect
- Only available online
- No protection from stomach acid
Verdict
The tablets from vitamaze contain 10,000 µg (10 mg) of biotin, 10 mg of zinc and 55 µg of selenium. Zinc and selenium are also credited with benefits for skin, hair and nails.
Most customers are happy with vitamaze Biotin tablets. Some, however, say the tablets are fairly large and uncoated, which makes them hard to swallow. Side effects have also been reported.
The recommended daily dose of 2 tablets is high compared with other biotin products.
Delivery is free with Amazon Prime and usually takes 1–2 working days.
Blood sugar and symptoms: can biotin help with diabetes?
Biotin even appears to help with diabetes. One study found that giving biotin alongside insulin therapy improved blood sugar control and may lower plasma lipid levels in patients with poorly controlled type 1 diabetes.
A study in mice also found benefits: compared with the placebo controls, biotin treatment lowered post-meal glucose levels and improved glucose tolerance and insulin resistance.
Biotin is also said to help keep other symptoms of diabetes under control, for example by easing the pain of diabetic nerve damage.
Biotin doesn't just help with acne and blemishes: it also supports regeneration and protects your skin from premature ageing.
Less stress, more wellbeing: biotin may also have a positive effect on your mental health
Biotin may also help counteract stress and mental health problems, as it plays an important role in the nervous system. Studies suggest that a higher intake of biotin and other B vitamins may be linked to a lower prevalence of depression, anxiety disorders and symptoms of stress. Biotin contributes to the synthesis of important neurotransmitters that help regulate mood, concentration and sleep.
Biotin also supports energy metabolism in your cells, ensuring a steady supply of energy to the brain, and this too affects how well you cope with stress. Getting enough biotin could therefore help improve your mental resilience and ease symptoms such as restlessness and exhaustion.
For people under chronic stress or prone to depression in particular, biotin could be part of a well-planned nutritional strategy. Getting enough biotin is especially important during pregnancy too, a time of extra emotional and physical strain, as this can minimise possible effects on your mental health.
Low biotin levels can make depressive symptoms worse. Studies show that getting the right amount of biotin can support wellbeing and stabilise your mood.
Our verdict: biotin supports the body in many ways
Biotin can do far more than strengthen your skin, hair and nails: it supports energy metabolism, contributes to the function of the nervous system and promotes healthy cell regeneration. Of course, you shouldn't take too much biotin, or take it over a long period without talking to your doctor.
So biotin can do a lot for your health: take a look at our product recommendations and find the right supplement for you.
Compare the biotin products we tested
* We may earn a commission from some of the companies featured. This is how we keep our comparisons free to read.
Some of these companies are our commercial partners.
Sources
1. https://efsa.onlinelibrary.wiley.com/doi/epdf/10.2903/j.efsa.2010.1728
2. https://www.rosenfluh.ch/media/ernaehrungsmedizin/2004/03/Biotin-Vitamin-H.pdf
3. https://pubmed.ncbi.nlm.nih.gov/33848753/
5. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3679599/
6. https://www.sciencedirect.com/science/article/abs/pii/0024320588902263