123I-Capsules

Indication

Used for diagnostic imaging in nuclear medicine, particularly for thyroid imaging and evaluation.

Dosage (summary)

Administered as a single oral dose of 123I-Capsules, typically ranging from 5 to 370 MBq depending on the specific diagnostic requirement.

Onset of Action / Duration

The onset of imaging effects typically occurs within 24 hours post-administration, with peak uptake in the thyroid gland observed within 2-6 hours.

Special Populations

• Elderly patients may require dose adjustments.
• Patients with renal impairment should be monitored closely.
• Pediatric patients may require adjusted dosing based on weight.

Pregnancy & Breastfeeding

Use in pregnancy is contraindicated unless absolutely necessary due to potential harm to the fetus. Caution is advised during lactation as iodine can be excreted in breast milk.

Key Drug Interactions

• Concurrent use of other iodine-containing medications may affect imaging results.
• Antithyroid medications may alter the uptake of iodine.

Contraindications

• Hypersensitivity to iodine or any component of the formulation.
• Severe thyroid dysfunction (e.g., uncontrolled hyperthyroidism).

Common side effects

• Nausea
• Vomiting
• Allergic reactions (rare)
• Thyroid dysfunction (rare)

Counselling Points

• Inform patients about the purpose of the imaging study and the expected duration of effects.
• Advise patients to report any allergic reactions or unusual symptoms following administration.
• Instruct patients to avoid iodine-rich foods and supplements prior to the procedure.