I'm just starting a regiment from my doctor to take Senna,Miralax and Milk of Magnesium..Because I cannot clear my digestive system right hardly at all,I take the Miralax and Senna in the morning,and MOM between 12 and 1 and 2 more Senna around 5 or 6.I have never taken this regiment before I started today,pharmacist says it's safe..My question is,is it safe to eat before these laxatives especially The MOM..or should I wait a certain amount of time before and after?