Thank you for the query.
It may happen that this is not constipations, but partial bowel obstruction due to colon cancer
. I know that we are talking about 84 years old person, but if it is possible, she should have colonoscopy
performed. Especially that you find none of medicines are effective. Same can be with Laxopeg.
It is also possible that such constipations are caused by long lasting in bed, or due to neurological problems (if she has some), however colon cancer should be ruled out at first.
Hope this will help.