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The most cost effective strength/formulation should be used   
Note: Liothyronine tablets should only be prescribed as per the following guidance:In line with British Thyroid Association (BTA) guidance, where levothyoroxine has failed, liothyronine may be recommended for individual patients after a carefully audited trial of at least 3 months duration of liothyronine.Existing patients should be reveiwed, as appropriate, by an endocrinologist to ensure the continuing need for liothyronine. Patients shouldn't have treatment stopped without review by an endocrinologist.      |