What the label lists and what reports show
Sodium iodide i 123 side effects
Sodium iodide i 123's FDA label lists its adverse reactions in its own words. FAERS holds 939 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 hypothyroidism (384 reports).
- Generic listed
Check it at the source: the sodium iodide i 123 FDA label on DailyMed (effective April 17, 2018, Cardinal Health 418, Inc); the FDA FAERS public dashboard.
What does the label list?
From the label: adverse reactionsAlthough rare, reactions associated with the administration of Sodium Iodide isotopes for diagnostic use include, in decreasing order of frequency, nausea, vomiting, chest pain, tachycardia, itching skin, rash and hives.
Source: FDA drug label, Cardinal Health 418, Inc, effective April 17, 2018 (SPL set 50415c27-1928-4307-b1dc-648f47edf65d), via openFDA; the full label on DailyMed
What do FAERS reports show?
939 reports list sodium iodide i 123 among the medicines taken, each a report of something that happened, not proof the medicine caused it; 46 are coded as a death and 62 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 22 reactions below, 2 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?
- Sodium iodide i 123: 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