Biotin is used for biotin deficiency. It is also commonly used for hair loss, brittle nails, and other conditions, but there is no good scientific evidence to support these uses.
How does it work ?
There isn't a good laboratory test for detecting low biotin levels, so this condition is usually identified by its symptoms, which include thinning of the hair (frequently with loss of hair color) and red scaly rash around the eyes, nose, and mouth. Other symptoms include depression, tiredness, hallucinations, and tingling of the arms and legs. There is some evidence that diabetes could cause low biotin levels.
Uses & Effectiveness ?
Likely Effective for
- Biotin deficiency. Taking biotin can help treat low blood levels of biotin. It can also prevent blood levels of biotin from becoming too low. Low blood levels of biotin can cause thinning of the hair and rash around the eyes, nose, and mouth. Other symptoms include depression, lack of interest, hallucinations, and tingling in the arms and legs. Low biotin levels can occur in people who are pregnant, who have had long-term tube feeding, who are malnourished, who have undergone rapid weight loss, or who have a specific inherited condition. Cigarette smoking might also cause low blood levels of biotin.
Possibly Ineffective for
Insufficient Evidence for
- An inherited condition that affects the brain and other parts of the nervous system (biotin-thiamine-responsive basal ganglia disease). People with this condition experience episodes of altered mental state and muscle problems. Early research shows that taking biotin with thiamine does not reduce symptoms more than taking thiamine alone. But the combination might shorten how long the episodes last.
- Brittle nails. Early research suggests that taking biotin by mouth for up to a year might increase the thickness of fingernails and toenails in people with brittle nails.
- Diabetes. Limited research shows that taking biotin doesn't improve blood sugar levels in people with diabetes.
- Muscle cramps. People receiving dialysis tend to have muscle cramps. Early research shows that taking biotin by mouth might reduce muscle cramps in these people.
- Lou Gehrig's disease (amyotrophic lateral sclerosis or ALS).
- Nerve pain in people with diabetes (diabetic neuropathy).
- Patchy hair loss (alopecia areata).
- Other conditions.
When applied to the skin: Biotin is LIKELY SAFE for most people when applied to the skin as cosmetic products that contain up to 0.6% biotin.
When given as a shot: Biotin is POSSIBLY SAFE when given as a shot into the muscle.
Special Precautions and Warnings
Children: Biotin is LIKELY SAFE when taken by mouth and appropriately.
An inherited condition in which the body cannot process biotin (biotinidase deficiency): People with this condition might need extra biotin.
Kidney dialysis: People receiving kidney dialysis may need extra biotin. Check with your health care provider.
Smoking: People who smoke might have low biotin levels and may need a biotin supplement.
Laboratory tests: Taking biotin supplements might interfere with the results of many different blood lab tests. Biotin can cause falsely high or falsely low test results. This might lead to missed or incorrect diagnoses. Tell your doctor if you are taking biotin supplements, especially if you are having lab tests done as you may need to stop taking biotin before your blood test. Most multivitamins contain low doses of biotin, which are unlikely to interfere with blood tests. But talk to your doctor to be sure.
We currently have no information for BIOTIN overview.
- General: There is no recommended dietary allowance (RDA) established for biotin. The adequate intakes (AI) for biotin are 30 mcg for adults over 18 years and pregnant women, and 35 mcg for breast-feeding women.
- Biotin deficiency: Up to 10 mg daily has been used.
- General: There is no recommended dietary allowance (RDA) established for biotin. The adequate intakes (AI) for biotin are 7 mcg for infants 0-12 months, 8 mcg for children 1-3 years, 12 mcg for children 4-8 years, 20 mcg for children 9-13 years, and 25 mcg for adolescents 14-18 years.
- Biotin deficiency: Up to 10 mg daily has been used in infants.
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