Thanks for providing more information.
As you describe possible causes may include burning mouth syndrome resulting in dry mouth,lips,burning sensation.
It can be caused due to dehydration,fungal infection,gum/dental issues,GERD,deficiency of iron or vitamins more commonly B vitamins,psychological factors, such as anxiety, depression.
Burning mouth syndrome and dry mouth are also reported with Benazepril.
So you need to discuss it with your doctor.
Also hydrate yourself with plenty of fluis.
Avoid products with cinnamon or mint.
Avoid spicy-hot foods.
Avoid acidic foods and liquids, such as tomatoes, orange juice, soft drinks and coffee.
And consult your regular doctor/dentist if your symptoms persist.
I hope this helps.
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