NOW Supplements Biotin

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.

Boosted mood

Most Useful Review

47 people found this helpful

I was very pleased with my first experience with biotin! I experienced no discomfort despite my allergy concerns. My nails have started to grow and no longer split, and I noticed an improvement in my mood and energy. My overall disposition has brightened considerably since taking it. I highly recommend it for beauty and health!

Updated: Apr 2025

Blood Clot details

2 people found this helpful

This vitamin is fantastic for enhancing beauty! My hair looks stunning, and my skin has improved significantly. Biotin reinforces nails and prevents seborrhea. It optimises glucose metabolism and regulates blood sugar, promoting overall health. Thanks to biotin, I feel more active and my mood is consistently uplifting. I highly recommend everyone try it!

Ear Infection details

Bald patches resolved

1 people found this helpful

Following a hormonal imbalance and significant hair loss, I decided to try supplements rather than opting for invasive treatments. I started taking Biotin, Collagen, and Omega 3, while also changing my shampoo. Within just 2-3 weeks, I noticed new hair growth, and my hair fell out less during washing. I'm thrilled with the results and regret not documenting my hair loss journey beforehand. While a friend suggested a higher dosage, this amount was effective for me, and I encourage others to seek professional advice and remain healthy!

Heart Attack details

Improved health benefits

Great quality with natural ingredients is vital for human health. The packaging is convenient, and I have noticed significant benefits for my body, including lower cholesterol levels and no more heart pain.

This is a great product that significantly raises energy levels and helps combat rapid fatigue in daily life.

Chronic Fatigue Syndrome details

Updated: Mar 2026

Eczema details

Biotin treatment for eczema effectiveness

Moderately Effective

Based on 5 Researches

Yang Y, Yang JY, Chen XJ. Biotinidase deficiency characterized by skin and hair findings. Clin Dermatol. 2020;38:477. doi:10.1016/j.clindermatol.2020.03.004

We explored a unique case involving a girl diagnosed with biotinidase deficiency, a rare inherited metabolic condition that can lead to notable skin and hair issues. The report highlighted her struggles with intractable dermatitis, yellow hair, and alopecia—symptoms that pointed to the underlying deficiency.

Biotin, a vital nutrient, was administered at a dose of 20 mg per day as a replacement therapy. Within one month, we observed a substantial improvement in her dermatitis, and by the three-month mark, her hair color had returned to near normal. The significant change in her condition illustrates how effective biotin can be for individuals suffering from both biotinidase deficiency and associated eczema-like symptoms.

This case serves as a reminder for healthcare providers, especially dermatologists, to consider biotinidase deficiency as a potential factor when treating similar conditions in children. By recognizing the importance of biotin, we can help improve health outcomes for those experiencing dermatological challenges tied to this rare disorder.

7.5

Energy and eczema relief

Most Useful Review

4 people found this helpful

This helped my eczema! I initially purchased this for energy, but I began to notice that my eczema became much more manageable. I didn’t expect this outcome. However, when I stopped taking it, I found that my eczema would flare up easily again. Taking biotin (one pill a day) seems to enhance the effectiveness of my eczema cream. I am uncertain if it made a notable difference in my energy levels.

Updated: Apr 2025

Diabetes details

Peptide hydrogel boosts islet transplantation

Based on 3 Researches

Cai X, Zhang M, Zou J, Wang L, Zhan Y, et al. A novel self-assembling peptide nanofiber hydrogel with glucagon-like peptide-1 functionality enhances islet survival to improve islet transplantation outcome in diabetes treatment. J Nanobiotechnology. 2024;22:792. doi:10.1186/s12951-024-03072-5

We explored a cutting-edge peptide hydrogel designed to improve islet transplantation outcomes for diabetes. By integrating glucagon-like peptide-1 (GLP-1) into a self-assembling nanofiber structure, we aimed to address the common issues of islet graft survival and function.

In our tests, this innovative hydrogel notably increased islet function and longevity, reducing inflammation and enhancing metabolic control in a mouse model. The findings show promise for localized delivery methods and suggest a potential breakthrough in diabetes treatment through improved graft efficacy.

7.5

Manages diabetes symptoms

Most Useful Review

5 people found this helpful

Biotin benefits not only skin and hair but also key bodily functions. It helps utilise enzymes and carry nutrients efficiently. Studies suggest it may assist in regulating blood sugar levels for some individuals with diabetes. Along with enhancing metabolism, biotin could aid in weight loss as well.

Updated: Mar 2026

Food Poisoning details

6 people found this helpful

Now Foods Biotin, 1000 mcg is excellent. The pills are easy to swallow and have helped my nails grow faster and stronger. They no longer crack as frequently.

Nausea details

No nausea experienced

A great supplement. The quality is excellent, and I experience no nausea after taking it. The quantity and size for this colour are fantastic. It positively affects my hair and nails.

Sleep Apnea details

Improved sleep quality

Excellent, delivered to us complete and undamaged. It helps me sleep better. Once finished, I will return to purchase again. Good quality, easy to consume, complete ingredients. The size is just right and the dosage is adequate. It’s beneficial and has a pleasant sweet taste. I appreciate that it genuinely works. I will purchase again.

Updated: Mar 2026

Bloating details

2 people found this helpful

I took this drug with my husband and we are thoroughly delighted! I noticed rumbling in my abdomen, bloating, and a sense of lightness, along with a boost in energy. A lovely bonus is that my hair has improved in quality!

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.

Thicker hair achieved

Most Useful Review

1 people found this helpful

At 65, I noticed my hair was thinning considerably, particularly at the front. After six months of taking biotin, I observed that my hair had thickened significantly. While my bald spot remains, the overall body and thickness at the front have improved, allowing me to style my hair more freely. I highly recommend it for both men and women seeking to improve their hair volume.

Updated: Mar 2026

Anxiety details

Effective for anxiety

Dude, I’m simply taking it for anxiety. It works brilliantly.

I took this as part of my therapy for Candidiasis and have experienced considerable new hair growth! I really appreciated its effects; my skin has also improved, and others have noticed too!

Candidiasis details

Hair Loss details

Biotin restores hair growth post-deficiency

Based on 22 Researches

Khalidi N, Wesley JR, Thoene JG, Whitehouse WM, Baker WL. Biotin deficiency in a patient with short bowel syndrome during home parenteral nutrition. JPEN J Parenter Enteral Nutr. 1984;8:311.

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.

Improved hair quality

Most Useful Review

94 people found this helpful

Biotin (vitamin B7) was recommended to me by an endocrinologist for hair loss. It increases keratin production, and I've also heard many in the gym recommend it during physical exertion. After a month of taking it alongside Omega-3, I have noticed a significant improvement in the quality of my hair. Hair loss has decreased considerably, and my hair is now growing noticeably quicker! The capsules are transparent, allowing me to see the contents.

Updated: Apr 2025

Acne details

Biotin's potential in acne treatment

Based on 5 Researches

Piraccini BM, Berardesca E, Fabbrocini G, Micali G, Tosti A. Biotin: overview of the treatment of diseases of cutaneous appendages and of hyperseborrhea. G Ital Dermatol Venereol. 2019;154:557. doi:10.23736/S0392-0488.19.06434-4

We explored the effectiveness of biotin as a treatment for acne, focusing on its potential benefits for those experiencing skin issues linked to biotin deficiency. Biotin is a vitamin that, when levels are low, can contribute to hair loss and skin disorders like seborrheic dermatitis.

In our overview, we noted that while biotin may help improve hair loss, its impact on acne treatment shows promise primarily when combined with other therapies, particularly topical retinoids. These treatments address not just acne but also flaking and irritation commonly associated with skin conditions.

Overall, we found that biotin's role in managing acne is intriguing, especially given its excellent tolerability and safety, even at high doses. However, we emphasize that biotin should be taken under medical supervision following a proper diagnosis.

Stopped acne issue

Most Useful Review

18 people found this helpful

Drop in hair loss. I was experiencing significant hair loss due to stress. I started taking biotin and pantothenic acid to counteract the oiliness from biotin, which causes acne for me. The pantothenic acid dried up my sebaceous glands, resolving the acne issue. I noticed a stark drop in hair loss within two weeks along with shinier nails and no visible changes in my skin since I take good care of it.

Updated: Mar 2026

Constipation details

Easier bowel movements

I consistently take this for my intestinal health. It does help me go to the bathroom more easily and appears to alleviate constipation.

Updated: Mar 2026

Autoimmune Disorder details

Moderate benefits, high testing interference

Based on 8 Researches

Espiritu AI, Remalante-Rayco PPM. High-dose biotin for multiple sclerosis: A systematic review and meta-analyses of randomized controlled trials. Mult Scler Relat Disord. 2021;55:103159. doi:10.1016/j.msard.2021.103159

We evaluated the effectiveness of high-dose biotin in treating multiple sclerosis through a systematic review of randomized controlled trials.

Our findings suggest that patients could see some benefit from using high-dose biotin over a period of 12 to 15 months.

However, it's important to note that this potential upside comes with a notable downside: an increased likelihood of affecting laboratory test results.

Overall, the evidence remains moderately certain, indicating a cautious approach is necessary for those considering biotin treatment for multiple sclerosis.

Dermatitis alleviated

Most Useful Review

7 people found this helpful

My mother and I took just one course of Biotin, and the results have been impressive. My hair has stopped falling out, and I've seen significant improvement in its condition. The Biotin also helped alleviate my seborrheic dermatitis, which is a major relief. I'm ordering additional jars to continue this positive trend.

Updated: Mar 2026

Rash details