Over the last year I have had a persistent cough & intermittent hoarse voice. I'm really tired of it. I'm under ENT services had all the tests, they say I have acid reflex & just say to keep on taking the ant-acid meds(which I know u shouldn't take if suffering from an under-active as I do) and adjust my diet to avoid foods containing acid & caffeine. I have reduced my acid intake & drink caffeine free or no caffeine drinks but have to admit finding it difficult to give up alcohol but I don't drink excessively. My problem still persists, does anyone have any suggestions? The doctors don't seem to acknowledge these problems can be linked to under-active thyroid.