Multivitamin

One A Day

41 adverse event reports submitted to the FDA · 2004–2025 · Data current as of June 3, 2026

These are reports submitted to the FDA. A report does not mean the product caused the effect. Counts reflect reporting activity, not how common an effect is.

Most Reported Reactions

Top 10 reactions from 41 reports. One report may include multiple reactions — reaction totals may exceed the report count.

Choking

Dyspnoea

Diarrhoea

Alopecia

Rash

Vomiting

Abdominal Pain

Heart Rate Increased

Heart Rate Irregular

Sinusitis

Reported Outcomes

Outcome categories as recorded in FDA reports. One report may include multiple outcomes.

Outcome	Reports
Other Serious or Important Medical Event	29
Visited a Health Care Provider	8
Hospitalization	7
Other Serious Outcome	7
Visited Emergency Room	5
Required Intervention	3
Other Outcome	2
Life Threatening	2
Disability	1
Death	1
Allergic Reaction	1

Who Reported

Reporter demographics where available. Many reports do not include age or gender data.

Age

Under 18

18–34

35–49

50–64

65–79

80+

Unknown

34 reports had age data; 7 unknown.

Gender

Female

Male

Unknown/Not Reported

Reports by Year

Annual report counts from 2004–2025. Spike years may reflect recalls, media coverage, or litigation rather than changes in the product.

'04

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'20

'21

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'24

'25

Hover bars for exact counts.

← View all One A Day products in FDA data

Data Source

This page presents data from the FDA's CFSAN Adverse Event Reporting System (CAERS) via the openFDA API. Reports are voluntary and unverified. The FDA has not concluded that this product caused any reported event.

View openFDA CAERS data ↗ · About our methodology · How to read this data