Morning. Sorry to hear ur poorly, babes. Im sure some1 will come along with whats good to take and Atkins friendly to help you .... Just wanted to give u a get well (((hug))
Boots may have sugar free cough sweets in their diabetic range. Cough medicines themselves are all sugary as far as I know. You may need to go over on your carbs if you find you really need cough medicine - it's only for a few days and better than being really ill.
Try lemsip though with sweeteners instead of sugar. Oh and benylin day and night come in tablet form!