What is Radioactive iodine (I-131)?

Category: Prescription Drugs

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Radioactive iodine, also known as radioiodine, Iodine-131 and I-131, is selectively used for certain conditions including thyroid cancer and thyrotoxicosis (excessive levels of thyroid hormone in the blood).

Reported purpose & perceived effectiveness
Purpose Patients Evaluations Perceived Effectiveness
Graves Disease 28 6
Papillary Thyroid Carcinoma 18 5
Thyroid Cancer 17 4
Hyperthyroidism 9 3
Follicular Thyroid Cancer 5 2
Hyperthyroidism (Overactive thyroid) 2 1

Show all 9 reasons taken


  • Major
  • Moderate
  • Slight
  • None
  • Can't tell

Side effects

Side effects as an overall problem

Side effects as an overall problem
Severity Evaluations
Severe 3
Moderate 4
Mild 5
None 5

Commonly reported side effects and conditions associated with Radioactive iodine (I-131)

Side effect Patients
Nausea 5
Dry mouth 3
Nausea and vomiting 2
Taste changed 2
Allergic to environment and chemicals 1
Blocked salivary duct 1

Show all 31 reported side effects

Why patients stopped taking Radioactive iodine (I-131)

Multiple reasons could be selected

Reason Patients
Course of treatment ended 44
Other 11
Doctor's advice 5
Did not seem to work 2
See all 69 patients who’ve stopped taking Radioactive iodine (I-131)

Duration

Stopped taking Radioactive iodine (I-131)

Duration Patients
0-1 month 62
1-3 months 1
3-6 months 2
6 months-1 year 3
2 years or more 1
Adherence
Adherence Evaluations
Always 13
Usually 0
Sometimes 0
Never taken as prescribed 4
Burden
Burden Evaluations
Very hard to take 5
Somewhat hard to take 4
A little hard to take 1
Not at all hard to take 7
Cost per month
Cost per month Evaluations
$200+ 2
$100-199 0
$50-99 1
$25-49 0
< $25 2
Not specified 12

What people switch to and from

Patients stopped taking Radioactive iodine (I-131) and switched to:

Treatment Patients
Anastrozole (Arimidex) 1
Last updated:
There are no evaluations for Radioactive iodine (I-131).