Hi welcome to Health care magic forum, Carbimazole
is a thyroid
suppressing compound, Hemorange is a general health product, usually general health products do not have any interactions with other drugs, but still to be on safe side it will be better if you find any unusual findings you can approach your doctor for confermation. caffeine being stimulant but will be in minute quantity. But if you get any excess stimulant activity you can avoid it .
Any drug can have side effects but ellicit only in some people, so we need not be over conscious about them. Once if you get it you should make a list of it and avoid it for ever, it is a must. Even the doctors dont know you will get it, so you should inform when you visit them, and ask them to make a note on the priscription, so that it is avoided for ever.
Wishing for a good luck, and thanks for calling.