Thank you for asking your query at DoctorSpring.
Oral Endep is not manufactured and designed for rectal use. The absorption will be less (due to reduced surface area), it will not be well retained, and there is a small risk of irritation. Moreover it is better absorbed from the intestine.
So using Oral Endop will not give you the desired help.
Hope I am clear.
Please feel free to ask followup questions.