I don't know if your doc will support ya - most just have no idea about this stuff. However, when you think about it all you are doing is drinking a little olive oil which you probably eat during the day anyway - and a little grapefruit juice - how can anyone say that is bad for ya?
As far as being able to still manage your affairs during the day you should be fine. I have two small kids myself and have always done fine. I get a bit queasy at night but no biggie. During the day you will have a short period where you will be around the bathroom a lot but that doesn't last long.
I have ulcerative colitis so I cut the Epsom Salts
dose quite a bit. I take a teaspoon dose at 8pm before olive oil drink and then a tablespoon dose in the am - this is enough for me to get things moving.