Jodid Draselný Serb (Potassium Iodide)

Potassium Iodide is used to manage conditions related to iodine deficiency and to provide thyroid protection in radiation exposure scenarios.

• Iodine deficiency: Restores adequate iodine levels to support normal thyroid hormone synthesis.
• Radiation emergencies: Blocks uptake of radioactive iodine by the thyroid, reducing radiation‑induced damage.
• Pre‑operative thyroid preparation: Supplies iodide to stabilize thyroid function before certain surgical procedures.
• Thyroid hormone prophylaxis: Provides iodide ions that help maintain thyroid hormone production during periods of low dietary iodine.

• Potassium iodide dissociates in the gastrointestinal tract to release iodide ions, which are taken up by the thyroid gland via the sodium‑iodide symporter. The increased intracellular iodide pool competes with radioactive iodine isotopes, reducing their organification, while simultaneously supporting the synthesis of thyroxine (T4) and triiodothyronine (T3) under normal physiological conditions.

Potassium Iodide may cause a range of adverse reactions, varying from mild to severe.

Common Side Effects

• Metallic taste: Transient metallic sensation in the mouth.
• Nausea: Mild queasiness after taking the product.
• Abdominal discomfort: Stomach cramps or mild pain.
• Headache: Mild headache.

Serious or Rare Side Effects

• Anaphylaxis: Severe allergic reaction that can affect breathing.
• Iodide‑induced hyperthyroidism: Excessive thyroid hormone production.
• Stevens‑Johnson syndrome: Rare severe skin reaction.

When prescribing potassium iodide, several precautions should be observed to ensure safe use.

• Assess iodine status: Verify patient’s baseline iodine levels before initiating therapy.
• Monitor thyroid function: Check thyroid hormone levels periodically during treatment.
• Avoid in iodine allergy: Do not use in individuals with known hypersensitivity to iodine or iodide.
• Use caution in pregnancy: Evaluate risk‑benefit ratio before prescribing to pregnant women.
• Use caution in hyperthyroidism: Consider alternative therapy for patients with uncontrolled hyperthyroidism.
• Store at room temperature: Keep in the original container, protect from moisture and direct sunlight.

Potassium iodide can interact with several medications, affecting its efficacy or safety.

Major Interactions (Avoid)

• Levothyroxine: Iodide may reduce absorption and effectiveness of levothyroxine.
• Antithyroid drugs (e.g., propylthiouracil, methimazole): Counteract each other's actions on thyroid hormone synthesis.
• Radioactive iodine therapy: Potassium iodide markedly decreases uptake of therapeutic radioactive iodine.

Moderate Interactions (Monitor Closely)

• Diuretics (loop and thiazide): May increase renal clearance of iodide, altering plasma levels.
• ACE inhibitors: Potential for altered potassium balance.
• Lithium: May enhance thyroid effects of iodide.
• Amiodarone: Combined iodine load may affect thyroid function.