What the label lists and what reports show
Cefadroxil side effects
Cefadroxil's FDA label lists its adverse reactions in its own words. FAERS holds 1,980 reports naming it through July 30, 2026; the reaction reported most often, leaving out the conditions it is used for, product-use terms and outcomes, is pain (355 reports).
- Generic listed
Check it at the source: the cefadroxil FDA label on DailyMed (effective June 1, 2026); the FDA FAERS public dashboard.
What does the label list?
From the label: adverse reactionsGastrointestinal Onset of pseudomembranous colitis symptoms may occur during or after antibiotic treatment (see WARNINGS ). Dyspepsia, nausea and vomiting have been reported rarely. Diarrhea has also occurred. Hypersensitivity Allergies (in the form of rash, urticaria, angioedema, and pruritus) have been observed. These reactions usually subsided upon discontinuation of the drug. Anaphylaxis has also been reported. Other Other reactions have included hepatic dysfunction including cholestasis and elevations in serum transaminase, genital pruritus, genital moniliasis, vaginitis, moderate transient neutropenia, fever. Agranulocytosis, thrombocytopenia, idiosyncratic hepatic failure, erythema multiforme, Stevens-Johnson syndrome, serum sickness, and arthralgia have been rarely reported. …
Source: FDA drug label, Proficient Rx LP, effective June 1, 2026 (SPL set 57eebea5-28b6-44a3-888b-76950f6038f4), via openFDA; the full label on DailyMed
What do FAERS reports show?
1,980 reports list cefadroxil among the medicines taken, each a report of something that happened, not proof the medicine caused it; 127 are coded as a death and 664 as a hospital stay. Counts follow how widely a medicine is used and watched, and they are not a measure of how risky it is. Of the 24 reactions below, 6 are named by the same term (in US spelling) in the label's adverse reactions, warnings or patient leaflet; a reaction the label does not name may still be there under another word, and a report does not show that the medicine caused it.
Reports received each year
The 25 most reported reactions
Source: FDA Adverse Event Reporting System (FAERS) via openFDA, reports through July 30, 2026; reactions as MedDRA preferred terms
What next?
- Cefadroxil: the full record
- label, generics, price, shortages, recalls
- Report a side effect to the FDA
- MedWatch
- Side effects hub
- the most reported medicines and reactions