Hi..
Thanks for the query..
Yes, the soreness in mouth along with dryness and ulcers is appearing to be due to the side effects of medication..
Soreness in mouth can be secondary to
dry mouth that can cause thinning of mucosa and inflammation..
Stopping the intake of medication or reducing the dose shall be decided by your Surgeon it as he knows your history and present clinical condition..
In case if the healing is appropriate then you can stop medication after the consent of the Surgeon..
For now to get symptomatic relief you should continue applying oragel or can Gargle with mouthwash containing Lignocaine.
You can get mouth gels like Oralbase to relieve dryness..
Avoid regular mouthwash especially those containing alcohol as they have drying effect in mouth.
You can Gargle with methlycellulose containing mouthwash like
Biotene as they relieve dry mouth..
Drink plenty of water..
Take Probiotics like Yogurt..
Hope this helps..
Regards..