I Have Been On Dialysis For 7 Years As The

I have been on dialysis for 7 years as the result of kidney failure after chemotherapy. I have survived cancer three times, 2004, 2010, 2014. I have had a stoma since 2010. I am female 78 years old. I take movicol regularly to keep my digestive system moving otherwise I become constipated and uncomfortable. Hospital gave me clearlax which I like better. Which is the best for me ClearLax or Movicol. If I don't take anything my digestive system just stops and faeces become hard. I must take something to keep faeces soft.