ginamia
Hello and welcome to HealingWell. I am sorry you are having problems.
15 Senna per day is a lot. 4 tablets twice a day is the maxium dose so I do hope you have talked with your Dr. re the large dose of this medication.
Ides has advised you well as the Ostomy forum has lots of info to read through.
Again a warm welcome to the forum.
Kindly,
Kitt