Carbimazole 5mg TabletsCarbimazole is an antithyroid agent that decreases the uptake and concentration of inorganic iodine by thyroid, it also reduces the formation of di iodotyrosine and thyroxine. Once converted to its active form of methimazole, it prevents the thyroid peroxidase enzyme from coupling and iodinating the tyrosine residues on thyroglobulin, hence reducing the production of the thyroid hormones T3 and T4. Hyperthyroidism means that the thyroid gland is