Assuming there are no other health issues any medication without sugar is OK and there are very few now with sugar. My diabetes gets really jealous when I get sick, my Diabetes even tells me ahead of time I'm getting sick. BGL starts to go up for no reason. Sure enough a day or 2 latter a cold etc has set in. Diabetes then really demands attention, there is no way it's going to tolerate a jumped up cold getting my undivided attention and just when you think you have it worked out it will dump a nasty hypo, or hyper depending on what you are least expecting. What a shame as I was becoming really good friends with that cold, it was much more understanding and compassionate compared to that jealous narcissistic D.