Thanks for posting your query.
With the available described details, there could be possibility of amlodipine
This drug commonly causes constipation. Constipation could also be due to diuretics (CTD) and due to old age induced weakness in intestine.
You should consult with internal medicine specialist and should go for thorough check up.
You should also go for serum electrolytes, thyroid profile, and blood sugar level.
You should take plenty of water along with Cremaffin
You should continue Isapgula along with lactitol
You should also perform hot sitz bath three times in day.
You should also apply diltiazem
ointment along with lignocaine.
Dr. Mayank Bhargava