21st Century Biotin Tablets

Biotin impacts abscess resolution

Moderately Effective

Based on 2 Researches

Chetan C, Singh B, Patra S, Gupta G. Biotinidase deficiency-masquerade of primary immunodeficiency disease in neonate. BMJ Case Rep. 2024;17. doi:10.1136/bcr-2023-258833

We explored the effects of biotin supplementation in a neonate with biotinidase deficiency who presented with severe symptoms. The case involved multiple abscesses, seizures, and septic arthritis, leading to concerns about primary immunodeficiency. After diagnosis, we initiated biotin treatment, which resulted in no further severe infections, seizures, or skin issues.

This highlights the importance of early detection and treatment of biotinidase deficiency and its relation to abscess formation.

No more blisters

Most Useful Review

4 people found this helpful

During seasonal changes or when my immune system is down, I used to develop small blisters on my fingertips and at the bases of my fingers. They didn't itch but eventually burst, leaving unsightly areas. This was quite bothersome. Since I started taking biotin, these blisters have vanished, which is a great relief. I take one small, tasteless pill each evening after dinner. While I don't feel it aids in greying hair, I would recommend this supplement to anyone dealing with skin issues.

Updated: Mar 2026

We encountered a case of a woman suffering from short bowel syndrome, who faced significant hair loss due to biotin deficiency while on home parenteral nutrition. After starting oral biotin supplementation of 10 mg/day for three weeks, we observed that her serum biotin levels increased, leading to noticeable new hair growth and resolution of other symptoms. Further intravenous biotin treatment maintained her on multivitamins that include biotin, preventing any future deficiency symptoms. This case highlights the importance of addressing biotin levels for hair health and overall well-being.

Decreased hair loss

Most Useful Review

2 people found this helpful

I tried these as recommended by my doctor, and they worked! My hair loss decreased significantly within three weeks.

Updated: Apr 2025

Chronic Fatigue Syndrome details

Fatigue relief achieved

90 people found this helpful

This vitamin is the best supplement I’ve ever taken. It has helped me immensely, from reducing fatigue to boosting my immune system. The pill is small and easy to swallow; it has become a staple in my daily routine!

Updated: Mar 2026

Common Cold details

105 people found this helpful

A very good dosage of vitamin D to compensate for this vitamin’s deficiency. I take a capsule with vitamin C and zinc in the morning post-breakfast. I am pleased with the outcome; I hardly catch colds, and I coped with COVID quite easily, without a high temperature or severe weakness.

Updated: Mar 2026

Adrenal Gland Disorder details

Biotin is essential! It must be included in the diet, as it aids in the conversion of proteins, fats, and carbohydrates into energy. A lack of energy affects physical activity and emotional well-being. Biotin improves hair health, and insufficient intake can lead to hair loss, brittle nails, and skin rashes. Studies show biotin's benefits for hair restoration, with one experiment demonstrating significant hair growth after three months of supplementation. Reports indicate that biotin enhances nail density and can also aid in lowering blood glucose for diabetes patients. Furthermore, biotin supports adrenal function and thyroid hormones, influencing various physiological processes. Insufficient biotin intake may lead to issues such as weight gain, fatigue, and sleep disorders. Overall, it promotes muscle tissue regeneration and aids in building muscle mass.

Candidiasis details

Nail growth improvement

I began taking this supplement for Candida, and it has not only helped with the discomfort but also strengthened my nails, making them longer with less breakage.

I truly benefited from this supplement, especially for hair and nail health, as the 10,000 mcg biotin promotes growth and strength. The tablets are small, gluten-free, and easy to swallow without any unpleasant taste. I experienced no side effects, and I recommend it to anyone needing a biotin supplement.

Celiac details

My hair started to grow, and I gave it to a friend undergoing chemotherapy, who experienced hair regrowth as well. We keep reordering!

Chemotherapy details

Hypothyroidism details

Low-dose biotin effects minimal

Questionable

Based on 2 Researches

Angelopoulos N, Paparodis RD, Androulakis I, Anagnostis P, Boniakos A, et al. The clinical significance of low dose biotin supplements (<300μg/day) in the treatment of patients with hypothyroidism: crucial or overestimated?. Thyroid Res. 2023;16:18. doi:10.1186/s13044-023-00162-8

We set out to investigate how low-dose biotin supplements, specifically those containing less than 300μg per day, might affect thyroid hormone levels in patients with hypothyroidism. Our approach included a detailed evaluation of 57 patients who were receiving thyroxine and also taking biotin supplements for a period ranging from 10 to 60 days.

Throughout the study, we measured the levels of thyroid-stimulating hormone (TSH) and free T4 (FT4) while the patients were on biotin and again 10 days after they stopped taking the supplement. As a control, we compared these findings to those of 31 age-matched individuals who were also being treated for hypothyroidism but were not using biotin.

Our analysis suggests that any changes observed in thyroid hormone profiles due to low-dose biotin supplementation are not clinically significant. In most cases, these changes do not warrant any adjustments to the patient's thyroid medication.

Overall, while our findings contribute to understanding the relationship between biotin and thyroid hormone levels, it appears that low-dose biotin may not play a crucial role in the treatment of hypothyroidism. Larger, more comprehensive studies would be beneficial to explore this phenomenon further.

New hair growth

Most Useful Review

3 people found this helpful

It works! These genuinely work! I have hypothyroidism, and my hair falls out in clumps due to hormonal fluctuations. After stopping the weight loss pill Alli, I started taking biotin every night along with a multivitamin. Within weeks, I noticed new hair growth. My hair has grown about 4 inches and is now healthier and thicker. I highly recommend giving it a try; you should see results in around two months.

Updated: Apr 2026

Adenoiditis details

Hair growth improvement

My child has grown a lot more confident since taking Biotic 10,000 mcg, which is easy to swallow and doesn't irritate the throat. This dietary supplement has significantly helped with hair loss and dry hair. After one jar, I noticed much fine hair growth, and my hair now grows quickly while my nails have become harder and less brittle. I highly recommend this high-dose, good-quality biotin at a reasonable price.

Leg Cramps details

Adequate muscle support

Great 21st Century Magnesium is a basic yet effective magnesium supplement. Formulated with magnesium oxide, it contains 110 tablets, each providing 400mg of elemental magnesium. This product supports muscle relaxation and nerve function, which in turn helps to reduce muscle cramps and enhances joint mobility. While it may not be the most absorbable form of magnesium, the high dosage compensates for this. Furthermore, the tablets are tasteless, making them easy to swallow. Overall, it is an affordable option for those needing support with muscle health and energy levels.

100 people found this helpful

Bone Pain details

Excellent! I have been using this vitamin for over a month now, and I can truly see its benefits. I was suffering from severe bone pain, and this has helped a lot. It also alleviated the insomnia that had troubled me for years. This vitamin is remarkable!

Chromium and biotin affect diabetes

High Cholesterol details

Albarracin C, Fuqua B, Geohas J, Juturu V, Finch MR, et al. Combination of chromium and biotin improves coronary risk factors in hypercholesterolemic type 2 diabetes mellitus: a placebo-controlled, double-blind randomized clinical trial. J Cardiometab Syndr. 2007;2:91.

We investigated the effects of a combination of chromium and biotin on cholesterol levels in people with type 2 diabetes. In a randomized, double-blind trial with 348 participants, those taking the supplement showed improvements in blood sugar levels and cholesterol levels compared to the placebo group.

However, while the chromium and biotin combination did yield positive results for cholesterol in some participants, overall, we found no significant changes in lipid levels for all participants. This suggests that while chromium and biotin may help with metabolic factors, their direct impact on cholesterol may be limited.

Strengthened hair and nails

Most Useful Review

15 people found this helpful

21st Century Biotin, with an impressive 10,000 mcg per tablet, has become crucial in my hair and nail care. After consistent use, I've observed remarkable improvements in their strength. Each tablet is well-dosed and easy to use. I wholeheartedly recommend it for anyone seeking healthy hair and nails.

Updated: Mar 2026

Allergies details

Biotin's impact on allergies explored

Moderately Effective

Based on 3 Researches

Kuroishi T. Regulation of immunological and inflammatory functions by biotin. Can J Physiol Pharmacol. 2015;93:1091. doi:10.1139/cjpp-2014-0460

We investigated the effects of biotin on immune responses and inflammatory conditions. Biotin, a necessary vitamin, plays a role in various metabolic pathways related to inflammation. While previous studies have suggested that biotin deficiency can lead to skin inflammation and immune issues, our findings highlight the potential of biotin supplementation in addressing metal allergies in animal models. However, significant improvements in allergy symptoms were not conclusively shown. Thus, while biotin may be beneficial, more research is needed to fully understand its impact on allergies.

7.5

Reduced rash

Most Useful Review

105 people found this helpful

I have been suffering from urticaria for four months. Neither steroids nor H1 blockers helped my rash and itching. After starting biotin, I noticed the red rash appeared smaller the following day. This could be useful for anyone in a similar situation.

Updated: Mar 2026

Eczema details