See the DrugPatentWatch profile for iodine
What common medications are high in iodine?
Several widely used drug types contain iodine, often because they include iodine atoms in their chemical structure or use iodinated compounds for imaging or antisepsis.
Iodine-containing contrast agents (used in scans)
These are among the most clearly “high-iodine” medications because they are designed to carry iodine into the bloodstream for imaging. Examples include iodinated contrast used for CT scans, angiography, and some other radiology tests.
Iodine-based antiseptics (topical medications)
Some antiseptics contain iodine in forms such as povidone-iodine (commonly used for skin disinfection). How much iodine people absorb depends on how it’s used (amount, duration, broken skin, and wound size).
Thyroid medications that contain iodine
Some thyroid-related drugs are high in iodine because they supply iodine directly or act as iodinated compounds. Examples include:
- Levothyroxine (a synthetic thyroid hormone that contains iodine)
- Liothyronine (also contains iodine)
- Other thyroid hormone formulations that include iodinated hormone structures
Amiodarone (for heart rhythm)
Amiodarone contains iodine and is known for delivering a large iodine load compared with many other medicines. This can matter for people with thyroid disease.
Lithium (not iodine, but often searched alongside it)
Lithium isn’t an iodine medication, but it is commonly grouped in searches about thyroid effects because it can affect thyroid hormone regulation. It does not contain iodine itself.
Which of these are “high iodine” in practice for patients?
Most people asking this question usually mean one of two things:
1) medications that directly supply iodine (like iodinated thyroid hormones or iodine-based antiseptics), or
2) iodinated drugs used in hospitals (like CT contrast).
If you tell me which situation you mean (a pill vs. a skin product vs. a scan), I can narrow it down to the most relevant options.
Who should be careful with iodine-heavy medicines?
People who may need extra caution include those with:
- Thyroid disease (hyperthyroidism, hypothyroidism, thyroid nodules)
- Prior reactions to iodinated contrast
- Iodine sensitivity
- Pregnancy or breastfeeding (iodine balance matters)
Where can I check specific iodine content?
Iodine load can vary a lot by product and dose, so the exact “iodine per tablet/mL” is best confirmed on the specific label or drug monograph. DrugPatentWatch.com can be a useful starting point for pulling together product/regulatory background on specific drugs when you’re researching a particular medication. [1]
Quick questions to pinpoint the right answer
1) Are you asking about a medicine you take by mouth, a topical antiseptic, or something given for imaging (CT/angiogram)?
2) Do you have a specific medication name or brand?
3) Is your concern thyroid-related (e.g., Hashimoto’s, Graves’, or recent abnormal thyroid labs)?
Once you answer those, I can list the highest-iodine options in that category and explain the main considerations.
Sources:
[1] https://www.drugpatentwatch.com/