Drugs › Arteriolar vasodilator
Generic name
Biotin: adverse event reports filed with FDA
769 reports list it as a suspect or interacting product, 2004–2026. Class: Arteriolar vasodilator. Also reported as Biotin 5000, Biotin /08249501/, Biotin Tab.
- 769
- reports as suspect product
- 0% of all reports · about 35 a year
- 72
- reports, 12 months to June 2026
- 74 in the 12 months before
- 78.8%
- marked serious by the reporter
- 10.6% across the class
- 22.2%
- record death among outcomes, as reported
- 171 reports · not verified by FDA
769 adverse event reports received by FDA list biotin, a generic name as a suspect or interacting product, from October 2004 to June 2026. A further 30,474 reports list it only as a concomitant medication, and those are not counted in the figures on this page.
In the 12 months to June 2026, 72 reports listed it, close to the 74 of the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Over its reporting history that is about 35 reports a year and 0% of the 20,646,523 reports in the database, and 1.8% of the reports for the arteriolar vasodilator class. How many people take it is not in the data, so a count is not a rate of occurrence.
Reporters most often recorded dyspnoea (25%), off label use (20.9%) and somnolence (19.5%). A report can list several reactions, so shares add to more than 100%; 343 different terms appear across these reports. Dyspnoea is recorded in 25% of these reports, a larger share than in the median arteriolar vasodilator drug (4.2%).
78.8% of the reports are marked serious by the reporter (10.6% across the class); 22.2% record death among the outcomes and 33.4% record hospitalisation, as reported. 44.9% of the reports came from other health professionals, and the largest patient age group is 75 and over (30%). FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event."
Reports by month, five years
Reports by the month FDA received them. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases.
By year received
2026 covers reports received through June 2026 only.
Reactions recorded in the reports
share of Biotin reports recording the termmedian drug in arteriolar vasodilator
- Dyspnoeashortness of breath25%192
- Off label useused for a purpose or in a way not on the label20.9%161
- Somnolencedrowsiness19.5%150
- Coronary artery disease19.4%149
- Coughcough18.2%140
- Wheezingwheezing17.2%132
- Muscle spasmsmuscle cramps16.1%124
- Chest discomfortchest discomfort16%123
- Abdominal distensiona bloated abdomen15.9%122
- Atrial fibrillationan irregular heart rhythm15.6%120
- Dyspnoea exertional15.5%119
- Eosinophilia15.5%119
- Myoglobin blood increased15.5%119
- Brain natriuretic peptide increased15.3%118
- Dysphoniaa hoarse voice15.3%118
- Fractional exhaled nitric oxide increased15.3%118
- Nasopharyngitisa cold15.3%118
- Sensation of foreign body15.2%117
- Cardiac disorder15%115
- Plantar fasciitis15%115
- Condition aggravatedthe condition being treated got worse14%108
- Nauseafeeling sick14%108
- Stressstress14%108
- Drug ineffectivethe medicine did not work as expected13.9%107
- General physical health deteriorationgeneral decline in health13.9%107
- Drug hypersensitivityan allergic-type reaction to a medicine13.8%106
- Multiple organ dysfunction syndromeseveral organs failing13.7%105
- Hyponatraemialow blood sodium13.5%104
- Obstructive sleep apnoea syndrome13.4%103
Top 30 of 343 MedDRA preferred terms recorded across these reports, with a plain-language gloss where one is available. One report can record several terms. The hollow bar is the median share across the 4 drugs in the arteriolar vasodilator class; it describes the reports, not the patients. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."
Outcomes recorded
Outcome flags as the reporter set them; a report can carry several, and "other serious" is FDA's own category for serious reports outside the named outcomes. Grey bar: all 43,259 reports in the class. FDA has not verified any outcome and states that the reports "cannot be used to estimate the incidence of these events."
Patients and reporters
Patient age
Patient sex
Who reported
Age and sex as stated in the report; the reporter's qualification is the primary source recorded by FDA. 38.5% of reports give the United States as the country of the event or reporter.
Reason for use recorded
| Indication as recorded (MedDRA) | Reports | Share |
|---|---|---|
| Vitamin supplementation | 53 | 6.9% |
| Alopecia | 33 | 4.3% |
| Foetal exposure during pregnancy | 20 | 2.6% |
| Multiple sclerosis | 18 | 2.3% |
| Constipation | 9 | 1.2% |
| Seizure | 8 | 1% |
The indication field is filled in by the reporter and is often blank; shares are of all 769 reports.
In context
| Measure | Biotin | Arteriolar vasodilator | All reports |
|---|---|---|---|
| Reports as suspect product | 769 | 43,259 | 20,646,523 |
| Share of that pool | — | 1.8% | 0% |
| Reports, latest 12 months | 72 | — | 1,332,454 |
| Marked serious | 78.8% | 10.6% | 57.4% |
| Death recorded among outcomes, per 1,000 reports | 222 | 11 | 91 |
| Hospitalisation recorded, per 1,000 reports | 334 | 45 | 213 |
| Consumer-filed share | 32.2% | 90.1% | 45.8% |
| Top term, share of reports | Dyspnoea 25% | median 4.2% | 2.7% |
Shares are of reports, not of patients treated. The number of people taking a product is not in the data, so none of these figures is a rate, and differences between columns reflect who takes a product, who reports and how long it has been sold. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic."
Other drugs in the arteriolar vasodilator class
| Drug | Name type | Reports | Latest 12 months | Marked serious |
|---|---|---|---|---|
| Minoxidil | generic | 28,593 | 1,277 | 6.2% |
| Womens Rogaine Unscented | brand | 11,409 | 334 | 0.7% |
| Hydralazine hydrochloride | generic | 2,488 | 260 | 85.6% |
Ordered by report count for navigation only. FDA states that adverse event reports "represent a small percentage of total usage numbers of a product", that "common products may have a higher number of adverse events due to the higher total number of people using the product", and that the data "by themselves are not an indicator of the safety profile of the drug or biologic." A brand and its generic are separate rows because reporters name them separately.
Questions about Biotin reports
How many adverse event reports has FDA received for Biotin?
769 reports list Biotin as a suspect or interacting product in the openFDA FAERS release of 28 Sep 2026, covering reports received through June 2026. 72 of them arrived in the latest 12 months. Another 30,474 list it only as a concomitant medication.
What reactions are recorded in Biotin reports?
dyspnoea (25%), off label use (20.9%), somnolence (19.5%), coronary artery disease (19.4%) and cough (18.2%). These are MedDRA preferred terms coded from what the reporter described; a report can list several, and a term's presence is not a finding that Biotin was responsible.
How serious are the reports?
78.8% are marked serious by the reporter. Among the outcomes recorded, 22.2% of reports include death and 33.4% include hospitalisation. FDA has not verified these outcomes and states that the reports "cannot be used to estimate the incidence" of the events.
Who files these reports?
other health professional (44.9%), consumer or non-health professional (32.2%) and physician (17.4%). Most reports reach FDA through the manufacturer, which must forward reports it receives.
Are reports for Biotin rising?
72 reports in the 12 months to June 2026, close to the 74 of the 12 months before. FDA releases FAERS data quarterly, so the newest months are incomplete and grow in later releases. Counts also move with how many people take a product, its time on the market and publicity.
Do these reports show that Biotin was responsible for these reactions?
No. FDA states that "a causal relationship cannot be established between product and reactions listed in a report" and that for any given report "there is no certainty that a suspected drug caused the event." The reaction may relate to the condition being treated, to other medicines, or to something else.
Is this a list of the side effects of Biotin?
No. It is a count of what was reported to FDA. The adverse reactions observed in clinical studies are printed on the FDA-approved label, which a pharmacist or clinician can go through with you.
How do I report an adverse event?
Consumers and health professionals can report to FDA through MedWatch (Form FDA 3500 online, or 1-800-FDA-1088), or to the manufacturer, which must pass reports on. See the guide on how to report.
Where this comes from. Counts are built from the openFDA Drug Adverse Event (FAERS) bulk export released 28 Sep 2026, which holds reports FDA received through 30 Jun 2026. Drug names are as reported, resolved to the brand or generic name on the FDA label where openFDA's harmonisation matched them; classes are the pharmacologic class (EPC) from the label and the National Drug Code Directory of 17 Sep 2026. A report counts here when it lists Biotin as a suspect or interacting product; reports listing it only as a concomitant medication (30,474) are excluded. No report narrative, lot number, patient detail or reporter identity is published. See the methodology and sources; FDA's record is authoritative, and corrections are handled within five working days.
Drug data (FAERS) through 30 Jun 2026; device data (MAUDE) through 31 Aug 2026. Not medical advice.