What the FDA labels say about taking them together
Ascorbic acid and sodium iodide i 131
Sodium iodide i 131's FDA label of January 21, 2025 names ascorbic acid in its warnings and precautions section; the ascorbic acid label PlainMeds reads does not name sodium iodide i 131. The sodium iodide i 131 label: “Advise good hydration for one week following sodium iodide I 131 administration and stimulate salivary flow via a sialagogue to reduce radiation exposure to the salivary glands.”
Check it at the source: the ascorbic acid FDA label on DailyMed (effective May 29, 2026, McGuff Pharmaceuticals, Inc.); the sodium iodide i 131 FDA label on DailyMed (effective January 21, 2025, Jubilant DraxImage Inc., dba Jubilant Radiopharma).
What does the ascorbic acid label say about sodium iodide i 131?
Ascorbic acid's label (effective May 29, 2026) does not name sodium iodide i 131 in these sections. A label lists what its studies and reports found; it is not a complete list.
Source: FDA drug label (Ascor), McGuff Pharmaceuticals, Inc., effective May 29, 2026 (SPL set 388aad52-fc01-4784-9791-1dbc80c69306), via openFDA; the full label on DailyMed
What does the sodium iodide i 131 label say about ascorbic acid?
Sodium iodide i 131 label, warnings and precautionsAdvise good hydration for one week following sodium iodide I 131 administration and stimulate salivary flow via a sialagogue (e.g. sugar-free candy or gum, pilocarpine, and ascorbic acid) to reduce radiation exposure to the salivary glands.
Source: FDA drug label (HICON), Jubilant DraxImage Inc., dba Jubilant Radiopharma, effective January 21, 2025 (SPL set 524a0dac-6e2b-2c0c-04b4-76d85dba63c5), via openFDA; the full label on DailyMed
These are the labels' own sentences. PlainMeds does not grade interactions; a pharmacist or prescriber can say what they mean for one person's medicines.
Both medicines on the record
| Ascorbic acid | Sodium iodide i 131 | |
|---|---|---|
| Labeled for | n/a | n/a |
| Boxed warning | No | No |
| Pharmacy cost (NADAC) | n/a | n/a |
| Shortage now | No current entry | No current entry |
Source: FDA NDC Directory, CMS NADAC of October 7, 2026 and the FDA Drug Shortage Database (FDA files October 8, 2026)
What next?
- Check more medicines together
- up to five at once