The composition of Lugol&;s iodine: (A) 10% KI with 5% Iodine, (B) 5% KI and 15% Iodine, (C) 5% Iodine with 20% KI, (D) 10% Iodine and 20% KI
Answer is A. Lugol's iodine is 10% KI with 5% Iodine. Used as an adjuvent in Graves patients planned for surgery. Iodides decrease the vascularity of the gland anf inhibit the release of thyroid hormones hence called thyroid constipating agents. Ref: KDT 7th ed Pg 255