Hi, you have come to the right place for support. There are people on here that are well informed and share information without hesitation. They are wonderful and will help you in any way that they can. I wanted to give you a little insight into the use of Lactulose. I don't know much but I will share what little I do know. As I said there are many others that have far more info than me.
Lactulose is a synthetic sugar. It is used for constipation and to decrease ammonia levels. It is often prescribed to people that have an elevated Amonia level. It works by pulling the ammonia out of the blood and is then excreted out of the body. Since its primary action is to soften the stool and relieve constipation you can assume (correctly) that it will cause diarrhea if given in high doses (as it is with elevated ammonia levels). When anyone has diarrhea for any length of time the body starts to loose other important blood components like electrolytes. That is primarily: Potassium, Sodium, Chloride, etc. So if you have labs drawn on a regular basis (which they should be) you will know what the DR is looking for. They want to see a decrease in the ammonia level and they watch the electrolyte levels very closely. If the electrolytes are too low they may put the patient on oral supplements. Every lab that is within a normal range is what maintains and sustains our bodies. When they are out of whack (abnormal) then it creates a whole slew of problems and racks havoc on the body. For example, a prolonged low Potassium affects muscle tissue and if not treated by oral supplements or IV can lead from muscle cramps to a heart attack. However; the benefits of lactulose far outweigh the side effects. A natural effect of elevated ammonia levels as you know cause confusion and lethargy. So the hoped for outcome of the lactulose is to decrease confusion etc. I realize that this is a simplified explanation but it may help you understand what’s happening.
With my mom- they had her on 120 cc a day (4 doses per day of 30 cc each) and although she had diarrhea (she was having loose stools about 8 times a day) her confusion didn’t diminish at all. Now, keep in mind that every case is different. There are a lot of people on this site that have been happy with the results and their ammonia levels came down. I hope this explanation of how lactulose works helps a little. Keep the faith and learn as much as you can about your husbands illness and treatment options. I might suggest keeping a journal on a day to day basis. This helps when you go for his Dr visits as you have accurate info on his symptoms etc. You may want to ask for a copy of his labs each time so you can track the results. We did and it helped us alot.
Shelly