Stu,
Many thanks for your reply, it feels good to hear from someone who has been there, done that etc! I don't know if novomix 30 and mixtard are the same types of insulin, but I certainly intend to find out. My dads specialist is resisting changing him back to his old regime, even talking of admitting him to hospital to carry out tests, so convinced is he that this nausea problem is not caused by the novomix30, but I think it is just too much of a coincidence.
I guess we'll just have to stand up to this guy and insist that we go back on the old regime and see if there is any improvement.
Thanks again, be well
jestom2