Hi Doctor,I am a patient of Panic Disorder & Thyroid, prescribed with Thyronorm 25mcg & Zapiz 0.5mg morning and 1mg evening, I was taking this dosage from last 6 months, now i have reduced my dosage of Zapiz 0.25mg Morning and 0.25mg Evening and Thyronorm 25mcg daily before breakfast.  Yesterday I got severe palpitations and my health was very bad the whole night.  I am taking these medicines from last 3 years kindly suggest and advise me what to do.
Hello! Welcome and thank you for asking on Chat Doctor! Regarding your concern, I would explain that your symptoms seem to be related to anxiety associated with to reduce of Rapid. You should know that Rapid is a benzodiazepine, which can help control anxiety and the reducing of the doses could be associated to exacerbation of the symptoms. But a cardiac arrhythmia can not be excluded too. So I recommend consulting with your GP for a careful physical examination, a resting ECG, a chest x-ray study and some blood lab tests : - complete blood count-thyroid function tests (some changes in thermoform may be needed)- blood electrolytes. If the above tests result normal, the most probable cause would remain a panic attack. In such case, you should discuss with your attending physician on the possibility of making some changes to your actual therapy, to help you control better your anxiety. Hope to have been helpful! Greetings!