Your guidance would be much appreciated is moxypen suitable to for treatment of excessive bowel bacteria eg e.coli and others? if not what would you

No: Moxypen is a brand name for amoxicillin. It is normal to have E. coli and other bacteria in the colon. In this short question, you have not indicated any symptoms which make you feel like you may have excessive bacteria in the colon. I would not take any antibiotics for this unless you are seen by a physician who has recommended it. Sometimes antibiotics can make bowel problems worse. Good luck.