Will mirtazapine cause my sugar to rise. i am diabectic.?

"Doesn't appear to be any problems ... " is not an acceptable reply.
The question is clear, so should be the answer.
The question requires a simple YES/NO and medical references to your the answer.
If you are not 100% sure what the answer is then you are not helping much with a "doesn't appear... " reply.

Answer to the question can be found here:
https://www.drugs.com/pro/mirtazapine-tablets.html

"Metabolic and Nutritional Disorders:frequent: thirst; infrequent: dehydration, weight loss; rare: gout, SGOT increased, healing abnormal, acid phosphatase increased, SGPT increased, diabetes mellitus."

So robo's answer is nothing more than a wild guess.