Graves' disease is one of the commonest causes of hyperthyroidism. Pre-treatment with Lugol solution, containing iodine/potassium iodide, to induce euthyroidism before surgery may be suggested, especially in case of adverse events due to antithyroid medication. Whether post-operative outcomes are any different following a course of Lugol solution in patient with Graves' disease is not well-documented in the literature. It is definite that large, prospective, randomized controlled trials of clinical and scientific are warranted to answer whether or not preparation with Lugol solution is necessary prior to surgery for Graves' disease.