Cirrhosis and bowel dysfunction

Hello Friends,
I am wondering if anyone with cirrhosis and portal hypertension is experiencing difficulty with gastrointestinal dysfunction. Specifically, constipation and painful bowels. I have increased water, vegetable and fruit intake and include probiotics, extra fiber (Metamucil), and even digestive enzymes. It is not giving me much relief. I have pain and bloating and gas. I know some of you are taking Lactulose. Does it help? Thanks for listening.