Thông tin thuốc gốc
Chỉ định và Liều dùng
Preoperative reduction of vascularity of the thyroid gland
Adult: In conjunction with antithyroid agents: As 5% w/v iodine with 10% w/v K iodide solution: 0.1-0.3 mL in milk or water tid for 6 days.

Radiation protection against radioactive iodine
Adult: As K iodate tab: 170 mg as single daily dose given within 3 hours (or up to 10 hours) of nuclear accident. Radiation protection persists for up to 24 hours.
Child: As K iodate tab: <1 month 21.25 mg; 1 month to 3 years 42.5 mg; 3-12 years 85 mg; >12 years Same as adult dose. All doses are given as single daily dose, may be crushed and mixed with milk or water.

Cleaning wet ulcers and wounds
Adult: As 0.9% cadexomer-iodine ointment, paste or powder: Apply to clean wounds as directed. Max: 50 g as a single application on clean wound; 150 g weekly. Change dressing for approx 3 times weekly, then reduce applications as exudates decrease. Discontinue if wound is free of exudate. Max duration: 3 months.

Antiseptic, Minor, superficial skin wounds
Adult: As 2% iodine tincture or 2.5% iodine with K iodide: Apply small amount to the affected area 1-3 times daily.
Child: Same as adult dose.
Tương kỵ
Forms a pungent irritating compound with acetone.
Chống chỉ định
Hypersensitivity. Hypocomplementaemic vasculitis, dermatitis herpetiformis, nodular thyroid conditions with cardiac disease. Topical: Neonates, pregnancy and lactation; concomitant lithium therapy. Renal failure (K iodate tab).
Thận trọng
Patient with current or history of thyrotoxicosis, nodular goitre or latent Graves’ disease, adrenal insufficiency (e.g. Addison’s disease), acute bronchitis, tuberculosis, myotonia congenita, cardiac disease, acute dehydration, heat cramp. Not recommended for long term treatment. Avoid applying to large areas of the body or covering affected area with occlusive dressings (topical). Renal impairment. Children, especially neonates. Pregnancy and lactation.
Phản ứng phụ
Significant: Thyroid-related reactions (e.g. iodine-induced hypo- or hyper-thyroidism, thyroiditis, thyroid enlargement); iodism or chronic iodine poisoning (prolonged treatment); hypersensitivity reactions (e.g. urticaria, angioedema, cutaneous haemorrhage or purpura); acne flare-ups, dermatitis.
Blood and lymphatic system disorders: Lymphadenopathy, eosinophilia.
Cardiac disorders: Cardiac arrhythmia.
Eye disorders: Lacrimation, conjunctivitis.
Gastrointestinal disorders: Nausea, vomiting, diarrhoea, increased salivation, salivary gland swelling or tenderness, stomach pain.
General disorders and admin site conditions: Fever, oedema, pain or burning sensation, fatigue, influenza-like illness.
Musculoskeletal and connective tissue disorders: Arthralgia.
Nervous system disorders: Headache, metallic taste, numbness, tingling sensation.
Psychiatric disorders: Insomnia, depression, confusion, nervousness.
Reproductive system and breast disorders: Impotence, erectile dysfunction.
Respiratory, thoracic and mediastinal disorders: Laryngitis, bronchitis, coryza-like symptoms.
Skin and subcutaneous tissue disorders: Rash, iodine burns, myxoedema.
Monitor thyroid function tests especially in pregnant women, children and neonates. Assess for signs and symptoms of hyperthyroidism.
Quá liều
Symptoms: Metallic taste, thirst, vomiting, headache, abdominal pain, diarrhoea; swelling of epiglottis causing asphyxia, aspiration, pneumonia or pulmonary oedema may lead to death. Systemic toxicity may result to fever, shock, tachycardia, metabolic acidosis and renal failure. Management: Symptomatic and supportive treatment. May administer copious amounts of milk and starch mucilage. If there is no evidence of oesophageal damage, may consider stomach aspiration or gastric lavage with dilute starch mucilage or 1% Na thiosulfate solution; activated charcoal within 1 hour of ingestion. Maintain circulation and replace electrolyte or water losses. May consider giving pethidine or morphine sulfate for pain only under medical supervision. May perform tracheotomy if necessary.
Tương tác
May cause additive hypothyroid and goitrogenic effects of lithium carbonate, iodides and amiodarone. May increase risk of hyperkalaemia with K-sparing diuretics (e.g. amiloride, triamterene), angiotensin II receptor antagonist, ACE inhibitors (e.g. captopril, enalapril); aliskiren, nicorandil, heparin. May enhance cardiac effect of quinidine.
Lab Interference
May interfere with thyroid function tests.
Tác dụng
Description: Iodine, a non-metallic element, temporarily blocks the thyroid hormone synthesis and secretion into circulation and reduces the thyroid gland size and vascularity. Iodine (as K iodide or K iodate) also inhibits the uptake of radioiodine by the thyroid gland thereby reducing the risk of thyroid cancer following radioactive iodine exposure. Topical iodine also acts as a powerful broad-spectrum germicidal agent by disrupting and penetrating the cell walls of microorganisms.
Onset: Hyperthyroidism: 24-48 hours.
Absorption: Rapidly absorbed from the gastrointestinal tract and transported into the thyroid gland; Slightly absorbed in the skin.
Distribution: Concentrated in the thyroid gland. Crosses the placenta and enters in breast milk.
Metabolism: Metabolised by amylases present in the wound fluid (topical). Converted to iodide.
Excretion: Mainly via urine (>90%); faeces, sweat and saliva (small amounts).
Bảo quản
Store below 25°C. Keep in tight, light-resistant containers.
Phân loại ATC
D08AG03 - iodine ; Belongs to the class of iodine product antiseptics. Used in the treatment of dermatological diseases.
Alcoholic Iodine Solution BP and Iodine Tincture BP (L.C.M. Ltd.). MHRA. Accessed 21/05/2019.

Anon. Iodine (Topical). AHFS Clinical Drug Information [online]. Bethesda, MD. American Society of Health-System Pharmacists, Inc. Accessed 21/05/2019.

Anon. Iodine. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. Accessed 21/05/2019.

Anon. Potassium Iodide and Iodine. Lexicomp Online. Hudson, Ohio. Wolters Kluwer Clinical Drug Information, Inc. Accessed 21/05/2019.

Aqueous Iodine Oral Solution BP (Thornton & Ross Ltd). MHRA. Accessed 21/05/2019.

Buckingham R (ed). Iodine. Martindale: The Complete Drug Reference [online]. London. Pharmaceutical Press. Accessed 21/05/2019.

Iodine Tincture White - Solution/Drops (Dannso Corp./d.b.a. Essential Products). DailyMed. Source: U.S. National Library of Medicine. Accessed 21/05/2019.

Joint Formulary Committee. Iodide with Iodine. British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. Accessed 21/05/2019.

Joint Formulary Committee. Iodine. British National Formulary [online]. London. BMJ Group and Pharmaceutical Press. Accessed 21/05/2019.

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