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
Patients with evaluations
Perceived effectiveness

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

Side effects

Side effects as an overall problem

Side effects of Radioactive iodine (I-131)

Severe
3
Moderate
4
Mild
4
None
5

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

Hospitalization
Patients
11
Patients
5
Patients
3
Hospitalization
Patients
3
Patients
2

Show all 29 reported side effects

Dosages

Most common dosages (by patients currently taking Radioactive iodine (I-131))
Dosage
1 other weekly
Patients
1
Why Patients Stopped Taking Radioactive iodine (I-131) (multiple reasons could be selected)
Reason
Course of treatment ended
Patients
41
Reason
Not indicated
Patients
12
Reason
Other
Patients
11
Reason
Doctor's advice
Patients
5
Reason
Did not seem to work
Patients
2
See all 66 patients who’ve stopped taking Radioactive iodine (I-131)

Duration

Stopped Taking Radioactive iodine (I-131)
Duration
Patients
Duration
0-1 month
Patients
1
Duration
1-3 months
Patients
1
Duration
3-6 months
Patients
2
Duration
6 months-1 year
Patients
2
Duration
1-2 years
Patients
0
Duration
2 years or more
Patients
1

Adherence


Always
Patients
12
75%
Usually
Patients
0
0%
Sometimes
Patients
0
0%
Never taken as prescribed
Patients
4
25%

Burden


Very hard to take
Patients
5
31%
Somewhat hard to take
Patients
3
19%
A little hard to take
Patients
1
6%
Not at all hard to take
Patients
7
44%

Cost per month


Cost per month
$200+
Patients
2
13%
Cost per month
$100-199
Patients
0
0%
Cost per month
$50-99
Patients
0
0%
Cost per month
$25-49
Patients
0
0%
Cost per month
< $25
Patients
2
13%
Cost per month
Not specified
Patients
12
75%

What people switch to and from

Patients started taking Radioactive iodine (I-131) after stopping:
Treatment name(s)
Chemotherapy
Patients
1
Treatment name(s)
Methimazole (Tapazole, Northyx)
Patients
1
Patients stopped taking Radioactive iodine (I-131) and switched to:
Treatment name(s)
Anastrozole (Arimidex)
Patients
1
Last updated:
There are no evaluations for Radioactive iodine (I-131).